( There ( ( is ( ( an index ) ( of ( ( the material ) ( contained ( at ( ( the head ) ( of ( ( the ( first reel ) ) ( in ( each part ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (EX There)) (VP (VBZ is) (NP (NP (DT an) (NN index)) (PP (IN of) (NP (NP (DT the) (NN material)) (VP (VBN contained) (PP (IN at) (NP (NP (DT the) (NN head)) (PP (IN of) (NP (NP (DT the) (JJ first) (NN reel)) (PP (IN in) (NP (DT each) (NN part)))))))))))) (. .)))
There is an index of the material contained at the head of the first reel in each part.
(ROOT (S (NP (NP (DT The) (`` ``) (NN head) ('' '')) (PP (IN of) (NP (DT the) (NN sperm)))) (VP (VBZ contains) (NP (DT the) (JJ genetic) (NN material))) (. .)))