RRGbank

To change a label, click on a node to select a different label from a list. The syntactic category and the function tag (before and after the dash "-") must be selected separately by clicking on the corresponding part of the label.
To add a function tag to a node that does not have one yet, drag it from the list of function tags onto the node.
Re-attach a node by dragging and dropping it on a new parent. This can be used to created discontinuous constituents.
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Finally, the bracketing can be edited manually in the text box below the tree; press "validate" to update the tree. Whitespace is ignored. Each token must have a dedicated POS tag.

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(SENTENCE
  (CLAUSE
    (CORE
      (NP
        (CORE_N
          (QP (P 0=About) (CD 1=160))
          (NUC_N (N 2=workers))
          (PP-PERI
            (CORE_P
              (NUC_P (P 3=at))
              (NP
                (OP-DEF 4=a)
                (CORE_N
                  (NUC_N (N 5=factory))
                  (CLAUSE-PERI
                    (PrCS (NP-REL (PRO-REL 6=that)))
                    (CORE
                      (NUC (V 7=made))
                      (NP
                        (CORE_N
                          (NUC_N (N 8=paper))
                          (PP
                            (CORE_P
                              (NUC_P (P 9=for))
                              (NP
                                (OP-DEF 10=the)
                                (CORE_N (NUC_N (N-PROP 11=Kent) (N 12=filters))))))))))))))))
      (NUC (V 14=exposed))
      (PP-PERI (CORE_P (NUC_P (P 15=to)) (NP (CORE_N (NUC_N (N 16=asbestos))))))
      (PP-PERI
        (CORE_P
          (NUC_P (P 17=in))
          (NP (OP-DEF 18=the) (CORE_N (NP (CORE_N (NUC_Q (QNT 19=1950s))))))))
      (. 20=.))
    (AUX-TNS 13=were)))

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(SENTENCE
  (CLAUSE
    (CORE
      (PP-PERI
        (CORE_P
          (NP (CORE_N (NUC_Q (QNT 19=1950s))) (OP-DEF 18=the))
          (NUC_P (P 17=in))))
      (PP-PERI (CORE_P (NUC_P (P 15=to)) (NP (CORE_N (NUC_N (N 16=asbestos))))))
      (NP
        (CORE_N
          (NUC_N (N 2=workers))
          (PP-PERI
            (CORE_P
              (NUC_P (P 3=at))
              (NP
                (CORE_N
                  (NUC_N (N 5=factory))
                  (CLAUSE-PERI
                    (PrCS (NP-WH (PRO-WH 6=that)))
                    (CORE
                      (NP
                        (CORE_N
                          (NUC_N (N 8=paper))
                          (PP-PERI
                            (CORE_P
                              (NUC_P (P 9=for))
                              (NP
                                (CORE_N (NUC_N (N 12=filters) (N-PROP 11=Kent)))
                                (OP-DEF 10=the))))))
                      (NUC (V 7=made)))))
                (OP-DEF 4=a))))
          (QP
            (CORE_Q
              (NUC_Q (QNT 1=160))
              (ADVP-PERI (CORE_ADV (NUC_ADV (ADV 0=About))))))))
      (NUC (V 14=exposed) (AUX-TNS 13=were))
      (. 20=.))))

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(SENTENCE
  (CLAUSE
    (CORE
      (NP
        (CORE_N
          (QP-PERI
            (CORE_Q
              (ADVP-PERI (CORE_ADV (NUC_ADV (ADV 0=About))))
              (NUC_Q (QNT 1=160))))
          (NUC_N (N 2=workers))
          (PP-PERI
            (CORE_P
              (NUC_P (P 3=at))
              (NP
                (OP-DEF 4=a)
                (CORE_N
                  (NUC_N
                    (N 5=factory)
                    (CLAUSE-PERI
                      (PrCS (NP-REL (PRO-REL 6=that)))
                      (CORE
                        (NUC (V 7=made))
                        (NP
                          (CORE_N
                            (NUC_N (N 8=paper))
                            (PP
                              (CORE_P
                                (NUC_P (P 9=for))
                                (NP
                                  (OP-DEF 10=the)
                                  (CORE_N (NUC_N (N-PROP 11=Kent) (N 12=filters)))))))))))))))))
      (NUC (AUX-TNS 13=were) (V 14=exposed))
      (PP (P 15=to) (NP (CORE_N (NUC_N (N 16=asbestos)))))
      (PP-PERI
        (CORE_P
          (NUC_P (P 17=in))
          (NP (OP-DEF 18=the) (CORE_N (NUC_Q (QNT 19=1950s))))))
      (. 20=.))))

Supertags

	token	arc	supertag
1	About	2	(CORE_Q* (ADVP-PERI (CORE_ADV (NUC_ADV (ADV <>)))))
2	160	3	(CORE_N* (QP-PERI (CORE_Q (NUC_Q (QNT <>)))))
3	workers	15	(NP (CORE_N (NUC_N (N <>))))
4	at	3	(CORE_N* (PP-PERI (CORE_P (NUC_P (P <>)) (NP ))))
5	a	6	(NP* (OP-DEF <>))
6	factory	4	(NP (CORE_N (NUC_N (N <>))))
7	that	8	(NP-REL (PRO-REL <>))
8	made	6	(NUC_N* (CLAUSE-PERI (PrCS (NP-REL )) (CORE (NUC (V <>)) (NP ))))
9	paper	8	(NP (CORE_N (NUC_N (N <>)) (PP )))
10	for	9	(PP (CORE_P (NUC_P (P <>)) (NP )))
11	the	13	(NP* (OP-DEF <>))
12	Kent	13	(NUC_N* (N-PROP <>))
13	filters	10	(NP (CORE_N (NUC_N (N <>))))
14	were	15	(NUC* (AUX-TNS <>))
15	exposed	0	(SENTENCE (CLAUSE (CORE (NP ) (NUC (V <>)) (PP (P ) (NP )))))
16	to	15	(P <>)
17	asbestos	15	(NP (CORE_N (NUC_N (N <>))))
18	in	15	(CORE* (PP-PERI (CORE_P (NUC_P (P <>)) (NP ))))
19	the	20	(NP* (OP-DEF <>))
20	1950s	18	(NP (CORE_N (NUC_Q (QNT <>))))
21	.	15	(CORE* (. <>))