Girls in school showing off their drawing.
Girls in school are doing jumping jacks.
The girls cannot be showing off their drawing and doing jumping jacks at the same time
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & in(x1,x2) & a_off(s1) & Manner(e1,s1) & Theme(e1,x4) & Actor(e1,x3) & v_show(e1) & n_drawing(x4) & of(x4,x1) & n_thing(x1) & (x2 = x3) & n_school(x2) & n_girl(x1))
exists e2 e1 x1 x2 x3.(ne_nam_girls(x1) & Theme(e2,x3) & Actor(e2,x1) & v_do(e2) & n_jack(x3) & Actor(e1,x3) & v_jump(e1) & in(x1,x2) & n_school(x2))