A crying child and people walking in a park.
The child is upset because the park is not fun.
A crying child can be crying for many reasons, spilt ice cream cone, feeling lost, stubbing their toe, getting a small knee bump, etc. There is no way to infer whether he is upset because the park is not fun from the first sentence.
exists e2 e1 s1 x1 x2 x3 x4.(a_topic(s1) & subset_of(x2,s1) & in(e2,x4) & n_park(x4) & Actor(e2,x3) & v_walk(e2) & (x2 = x3) & n_people(x2) & subset_of(x1,s1) & n_child(x1) & Actor(e1,x1) & v_cry(e1))
exists e1 p1 x1 x2.(n_park(x2) & n_child(x1) & -exists p2 x3.((x2 = x3) & n_fun(x3)) & because(e1,p1) & Theme(e1,x1) & v_upset(e1))