Two children laying on the ground smile at each other.
Two children are jumping up.
The children cannot be laying on the ground and jumping up simultaneously.
exists e1 x1 x2 x3 x4.(n_smile(x3) & of(x3,x4) & n_ground(x4) & a_topic(x1) & all x5.(n_other(x5) -> at(e1,x5)) & on(e1,x3) & Actor(e1,x2) & v_lay(e1) & (x1 = x2) & n_child(x1) & card_eq_2(x1))
exists e1 s1 x1.(a_up(s1) & Manner(e1,s1) & Actor(e1,x1) & v_jump(e1) & n_child(x1) & card_eq_2(x1))