Two older boys and two younger boys are looking out at the water while on a boat.
Four boys on a boat look out at the water.
It tells that four boys were on looking at the boat.
exists e1 s1 s2 s3 x1 x2 x3 x4 x5.(n_water(x4) & on(e1,x5) & n_boat(x5) & r_while(e1) & a_out(s3) & Manner(e1,s3) & at(e1,x4) & Actor(e1,x1) & v_look(e1) & subset_of(x3,x1) & n_boy(x3) & r_more(s2) & a_younger(s2) & Theme(s2,x3) & card_eq_2(x3) & subset_of(x2,x1) & n_boy(x2) & r_more(s1) & a_older(s1) & Theme(s1,x2) & card_eq_2(x2))
exists x1 x2 x3 x4.(n_water(x4) & a_topic(x1) & on(x1,x2) & n_out(x2) & at(x2,x4) & n_look(x2) & of(x2,x3) & n_boat(x3) & n_boy(x1) & card_eq_4(x1))