Two boy put their hands together while another boy goes under their hands.
The boys have their hands together.
For another boy to go under their hands would imply that the boys' hands are together.
exists e1 p1 s1 x1 x2.(exists e2 x3.(under(e2,x2) & Actor(e2,x3) & v_go(e2) & n_boy(x3) & -(x3 = x1)) & n_hand(x2) & n_hand(x2) & of(x2,x1) & n_thing(x1) & n_thing(x1) & n_boy(x1) & n_boy(x1) & while(e1,p1) & a_together(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_put(e1) & card_eq_2(x1))
exists e1 s1 x1 x2.(n_hand(x2) & of(x2,x1) & n_thing(x1) & n_boy(x1) & a_together(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1))