( Building ( blocks ( for ( cell membranes ) ) ) )
(ROOT (NP (NP (NNP Building)) (NP (NP (NNS blocks)) (PP (IN for) (NP (NN cell) (NNS membranes))))))
Building blocks for cell membranes
(ROOT (S (NP (NNS Cells)) (VP (VBP are) (NP (NP (DT the) (VBN specialized) (NN building) (NNS blocks)) (PP (IN of) (NP (PRP$ your) (NN body))))) (. .)))