Three boys jumping off of a platform.
The boys are jumping
Boys jumping can not necessarily jumping off a platform.
exists e1 x1 x2 x3.(a_topic(x1) & of(e1,x3) & n_platform(x3) & r_off(e1) & Actor(e1,x2) & v_jump(e1) & (x1 = x2) & n_boy(x1) & card_eq_3(x1))
exists e1 x1.(n_boy(x1) & Actor(e1,x1) & v_jump(e1))