Two young boys are playing soccer.
Two boys are doing physical activity.
Soccer is physical activity.
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_soccer(x2) & n_boy(x1) & a_young(s1) & Theme(s1,x1) & card_eq_2(x1))
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_activity(x2) & a_physical(s1) & Theme(s1,x2) & n_boy(x1) & card_eq_2(x1))