( ( A cell ) ( ( is ( ( the ( ` ( basic ( building ( block ' ) ) ) ) ) ( of church ) ) ) . ) )
(ROOT (S (NP (DT A) (NN cell)) (VP (VBZ is) (NP (NP (DT the) (`` `) (JJ basic) (NN building) (NN block) ('' ')) (PP (IN of) (NP (NN church))))) (. .)))
A cell is the 'basic building block' of church.
(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))))) (. .)))