( ( ( The ( sperm 's ) ) ( oval head ) ) ( ( contains ( genetic material ) ) ; ) )
(ROOT (S (NP (NP (DT The) (NN sperm) (POS 's)) (JJ oval) (NN head)) (VP (VBZ contains) (NP (JJ genetic) (NN material))) (: ;)))
The sperm's oval head contains genetic material;
(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))) (. .)))