A girl in a crowd laughs and climbs on something.
An individual is in his room, alone.
The pronoun his is not for a girl and being an individual, alone, is not the same as being in a crowd.
exists x1 x2 x3 x4 x5 x6.(a_topic(x1) & in(x1,x2) & subset_of(x5,x2) & on(x5,x6) & n_thing(x6) & n_climb(x5) & subset_of(x3,x2) & n_laugh(x3) & of(x3,x4) & n_crowd(x4) & n_girl(x1))
exists p1 x1 x2.(in(x1,x2) & r_alone(x2) & n_room(x2) & of(x2,x1) & n_male(x1) & n_individual(x1))