Two men and one woman are having a rock skipping contest on the side of a lake.
Three people are outdoors.
The people are outdoors because they are on the side of a lake.
exists e1 e2 x1 x2 x3 x4 x5 x6 x7.(n_side(x6) & Theme(e2,x4) & Actor(e2,x1) & v_have(e2) & on(x4,x6) & of(x6,x7) & n_lake(x7) & n_contest(x4) & Actor(e1,x4) & v_skip(e1) & of(x4,x5) & n_rock(x5) & n_woman(x3) & card_eq_1(x3) & n_man(x2) & card_eq_2(x2) & subset_of(x3,x1) & subset_of(x2,x1))
exists p1 x1.(exists x2.((x1 = x2) & n_outdoors(x2)) & n_people(x1) & card_eq_3(x1))