( Both ( ( ( primates ( signal ( ( emotions and ) intentions ) ) ) ( through ( ( ( facial ( expressions ( and ( hand gestures ) ) ) ) , ) ( ( many ( of which ) ) ( ( are also ) ( present ( in ( ( the ( nonverbal communication ) ) ( of humans ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT Both)) (VP (VBZ primates) (NP (NN signal) (NNS emotions) (CC and) (NNS intentions)) (PP (IN through) (NP (NP (JJ facial) (NNS expressions) (CC and) (NN hand) (NNS gestures)) (, ,) (SBAR (WHNP (DT many) (WHPP (IN of) (WHNP (WDT which)))) (S (VP (VBP are) (ADVP (RB also)) (ADJP (JJ present) (PP (IN in) (NP (NP (DT the) (JJ nonverbal) (NN communication)) (PP (IN of) (NP (NNS humans)))))))))))) (. .)))
Both primates signal emotions and intentions through facial   expressions and hand gestures, many of which are also   present in the nonverbal communication of humans.
(ROOT (S (NP (JJ Human) (JJ facial) (NNS expressions)) (VP (MD can) (VP (VB communicate) (NP (NNS emotions)))) (. .)))