Three boys in swimming trunks are diving into the lake.
The boys are sitting on the grass near the lake.
Boys can't be sitting on the grass and diving into a lake at the same moment.
exists e1 x1 x2 x3 x4.(n_lake(x4) & into(e1,x4) & Actor(e1,x1) & v_dive(e1) & in(x1,x2) & n_trunk(x2) & of(x2,x3) & n_swimming(x3) & n_boy(x1) & card_eq_3(x1))
exists e1 x1 x2 x3.(n_lake(x3) & n_grass(x2) & n_boy(x1) & on(e1,x2) & near(x2,x3) & Actor(e1,x1) & v_sit(e1))