// Sentence: Big flies chase small flies
Token("big",0)
Token("flies",1)
Token("chase",2)
Token("small",3)
Token("flies",4)

// Training
Adj(0,1)
N(1,2)
V(2,3)
Adj(3,4)
N(4,5)

S(0,5)
NP(0,2)
VP(2,5)
NP(3,5)

Succ(1,0)
Succ(2,1)
Succ(3,2)
Succ(4,3)
Succ(5,4)