A girl in a crowd laughs and climbs on something.
A girl is at a sporting activity.
You can not infer it's sporting.
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.(exists x2 x3.(at(x1,x2) & n_activity(x2) & of(x2,x3) & n_sporting(x3)) & n_girl(x1))