Two girls in shorts are standing inside a shower stall.
The two girls are showering together.
Just because two girls are standing in a shower stall does not mean they are showering together.
exists e1 x1 x2 x3 x4.(inside(e1,x3) & n_stall(x3) & of(x3,x4) & n_shower(x4) & Actor(e1,x1) & v_stand(e1) & in(x1,x2) & n_shorts(x2) & n_girl(x1) & card_eq_2(x1))
exists e1 p1 x1.(n_girl(x1) & card_eq_2(x1) & exists s1.(Theme(s1,x1) & a_together(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_shower(e1))