A man pushing two children with one running next to him.
A man is outside with three children.
Two children plus one child makes three children.  If someone is pushing children and one is running, it  is probably happening outside.
exists e2 e1 x1 x2 x3 x4 x5.(a_topic(x1) & with(e1,x4) & to(e2,x1) & n_male(x1) & r_next(e2) & Actor(e2,x5) & v_run(e2) & (x4 = x5) & n_thing(x4) & card_eq_1(x4) & Theme(e1,x3) & Actor(e1,x2) & v_push(e1) & n_child(x3) & card_eq_2(x3) & (x1 = x2) & n_man(x1))
exists s1 x1 x2.(with(s1,x2) & n_child(x2) & card_eq_3(x2) & Theme(s1,x1) & a_outside(s1) & n_man(x1))