( ( Once ( through ( the atrium ) ) ) ( , ( visitors ( ( ( take ( a ( winding boardwalk ) ) ) ( ( past ( other primates ) ) ( including ( ( ( ( ( ( ( ( a ( second ( gorilla group ) ) ) , ) orangutans ) , ) mandrills ) , ) and ) ( white-cheeked gibbons ) ) ) ) ) . ) ) ) )
(ROOT (S (ADVP (RB Once) (PP (IN through) (NP (DT the) (NN atrium)))) (, ,) (NP (NNS visitors)) (VP (VBP take) (NP (DT a) (JJ winding) (NN boardwalk)) (NP (NP (JJ past) (JJ other) (NNS primates)) (PP (VBG including) (NP (NP (DT a) (JJ second) (NN gorilla) (NN group)) (, ,) (NP (NNS orangutans)) (, ,) (NP (NNS mandrills)) (, ,) (CC and) (NP (JJ white-cheeked) (NNS gibbons)))))) (. .)))
Once through the atrium, visitors take a winding boardwalk past other primates including a second gorilla group, orangutans, mandrills, and white-cheeked gibbons.
(ROOT (S (NP (DT A) (-LRB- -LRB-) (NN n) (-RRB- -RRB-) (NN orangutan)) (ADVP (RB generally)) (VP (VBZ lives) (ADVP (RB alone))) (. .)))