( Structure ( of ( Red ( Blood Cells ) ) ) )
(ROOT (S (VP (VB Structure) (PP (IN of) (NP (NNP Red) (NNP Blood) (NNP Cells))))))
Structure of Red Blood Cells
(ROOT (S (NP (NNP Red) (NN blood) (NNS cells)) (VP (VBP are) (NP (DT the) (RBS most) (JJ numerous) (NN blood) (NNS cells))) (. .)))