Sentence


Parse

It
NP
 
's
(S[dcl]\NP)/(S[pt]\NP)
 
been
(S[pt]\NP)/NP
 
three
N/N
 
years
N
 
N
> 0
since
(N\N)/S[dcl]
 
Tom
N
 
NP
*
left
(S[dcl]\NP)/NP
 
Boston
N
 
NP
*
.
.
 
NP
.
S[dcl]\NP
> 0
S[dcl]
< 0
N\N
> 0
N
< 0
NP
*
S[pt]\NP
> 0
S[dcl]\NP
> 0
S[dcl]
< 0

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