Girls in school showing off their drawing.
Girls have made drawings.
Girls would have had to have made drawings in order to be showing off their drawings.
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 e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_make(e1) & n_drawing(x2) & n_girl(x1))