Make-believe roles are not equally pleasurable'a feature of cooperation that is as true in everyday life as it is in fantasy play.
( ( Make-believe roles ) ( ( ( are not ) ( ( ( ( equally pleasurable'a ) feature ) ( of cooperation ) ) ( that ( ( is ( as ( true ( in ( everyday life ) ) ) ) ) ( as ( it ( is ( in ( fantasy play ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Make-believe) (NNS roles)) (VP (VBP are) (RB not) (NP (NP (ADJP (RB equally) (JJ pleasurable'a)) (NN feature)) (PP (IN of) (NP (NN cooperation))) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (ADJP (RB as) (JJ true) (PP (IN in) (NP (JJ everyday) (NN life)))) (SBAR (IN as) (S (NP (PRP it)) (VP (VBZ is) (PP (IN in) (NP (NN fantasy) (NN play))))))))))) (. .)))
Cooperation may be less pleasurable at times, but are also necessary.
( Cooperation ( ( ( ( ( may ( be ( less ( pleasurable ( at times ) ) ) ) ) , ) but ) ( ( are also ) necessary ) ) . ) )
(ROOT (S (NP (NNP Cooperation)) (VP (VP (MD may) (VP (VB be) (ADJP (RBR less) (JJ pleasurable) (PP (IN at) (NP (NNS times)))))) (, ,) (CC but) (VP (VBP are) (ADVP (RB also)) (ADJP (JJ necessary)))) (. .)))