( ( ( The head ) ( of ( ( the sperm ) ( with ( its ( genetic material ) ) ) ) ) ) ( ( ( ( has ( penetrated ( ( the ( ovum 's ) ) ( cell plasma ) ) ) ) and ) ( ( is steadily ) ( approaching ( ( ( ( the ( woman 's ) ) ( genetic material ) ) , ) ( which ( is ( ( stored deep ) ( inside ( the ovum ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN head)) (PP (IN of) (NP (NP (DT the) (NN sperm)) (PP (IN with) (NP (PRP$ its) (JJ genetic) (NN material)))))) (VP (VP (VBZ has) (VP (VBN penetrated) (NP (NP (DT the) (NN ovum) (POS 's)) (NN cell) (NN plasma)))) (CC and) (VP (VBZ is) (ADVP (RB steadily)) (VP (VBG approaching) (NP (NP (NP (DT the) (NN woman) (POS 's)) (JJ genetic) (NN material)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ is) (VP (VBN stored) (ADVP (RB deep)) (PP (IN inside) (NP (DT the) (NN ovum))))))))))) (. .)))
The head of the sperm with its genetic material has penetrated the ovum's cell plasma and is steadily approaching the woman's genetic material, which is stored deep inside the ovum.
(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))) (. .)))