The anthropologist Napoleon Chagnon has shown that Yanomamo men who have killed other men have more wives and more offspring than average guys.
( ( The ( anthropologist ( Napoleon Chagnon ) ) ) ( ( has ( shown ( that ( ( ( Yanomamo men ) ( who ( have ( killed ( other men ) ) ) ) ) ( have ( ( ( more wives ) and ) ( ( more offspring ) ( than ( average guys ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (JJ anthropologist) (NNP Napoleon) (NNP Chagnon)) (VP (VBZ has) (VP (VBN shown) (SBAR (IN that) (S (NP (NP (NNP Yanomamo) (NNS men)) (SBAR (WHNP (WP who)) (S (VP (VBP have) (VP (VBN killed) (NP (JJ other) (NNS men))))))) (VP (VBP have) (NP (NP (JJR more) (NNS wives)) (CC and) (NP (NP (JJR more) (NN offspring)) (PP (IN than) (NP (JJ average) (NNS guys)))))))))) (. .)))
Yanomamo men who kill other men have better chances at getting more wives.
( ( ( Yanomamo men ) ( who ( kill ( other men ) ) ) ) ( ( ( have ( better chances ) ) ( at ( getting ( more wives ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Yanomamo) (NNS men)) (SBAR (WHNP (WP who)) (S (VP (VBP kill) (NP (JJ other) (NNS men)))))) (VP (VBP have) (NP (JJR better) (NNS chances)) (PP (IN at) (S (VP (VBG getting) (NP (JJR more) (NNS wives)))))) (. .)))