( ( Primary consumers ) ( ( form ( trophic level ) ) 2 ) )
(ROOT (NP (NP (JJ Primary) (NNS consumers)) (NP (NP (NN form) (JJ trophic) (NN level)) (NP (CD 2)))))
Primary consumers form trophic level 2
(ROOT (S (NP (NP (JJ Secondary) (NNS consumers)) (PRN (-LRB- -LRB-) (SBAR (WHNP (WDT which)) (S (VP (VBP eat) (NP (JJ primary) (NNS consumers))))) (-RRB- -RRB-))) (VP (VBP are) (VP (VBN considered) (S (VP (TO to) (VP (VB be) (ADJP (JJ trophic) (NP (NN level) (CD 3)))))))) (. .)))