( ( long-chain ( fatty acid ) ) ; )
(ROOT (NP (NP (JJ long-chain) (NN fatty) (NN acid)) (: ;)))
long-chain fatty acid;
(ROOT (S (NP (JJ Unsaturated) (NN fatty) (NNS acids)) (VP (VBP have) (NP (NN bent) (NNS chains))) (. .)))
Unsaturated fatty acids have bent chains.