( ( An area ) ( ( is ( available ( for food ) ) ) . ) )
(ROOT (S (NP (DT An) (NN area)) (VP (VBZ is) (ADJP (JJ available) (PP (IN for) (NP (NN food))))) (. .)))
An area is available for food.
(ROOT (S (NP (NP (DT The) (NN amount)) (PP (IN of) (NP (NP (NN food)) (ADJP (JJ available) (PP (IN in) (NP (DT the) (NN area))))))) (ADVP (RB best)) (VP (VBZ determines) (NP (NP (DT the) (NN number)) (PP (IN of) (NP (NP (NNS wolves)) (SBAR (WHNP (WDT that)) (S (VP (MD can) (VP (VB live) (PP (IN in) (NP (DT an) (NN area))))))))))) (. .)))