Sentence


Parse

Dark
N/N
 
clouds
N
 
N
> 0
NP
*
are
(S[dcl]\NP)/NP
 
a
NP/N
 
sign
N/PP
 
of
PP/NP
 
rain
N
 
NP
*
.
.
 
NP
.
PP
> 0
N
> 0
NP
> 0
S[dcl]\NP
> 0
S[dcl]
< 0

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