Two people in a large canoe surrounded by water.
Two people paddle their canoe in a race on a river.
the fact that people are in a canoe does not imply that they paddle the canoe or that they are in a race on a river.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & in(x1,x2) & Actor(e1,x4) & n_water(x4) & Theme(e1,x3) & v_surround(e1) & (x2 = x3) & n_canoe(x2) & a_large(s1) & Theme(s1,x2) & n_people(x1) & card_eq_2(x1))
exists e1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_paddle(e1) & in(x2,x3) & on(x3,x4) & n_river(x4) & n_race(x3) & n_canoe(x2) & of(x2,x1) & n_thing(x1) & n_people(x1) & card_eq_2(x1))