Some people paddling near the shore of a river.
some people are in a canoe
Just because people are paddling near the shore of a river it does not mean they are in a canoe.
exists e1 x1 x2 x3 x4.(n_shore(x3) & a_topic(x1) & near(e1,x3) & of(x3,x4) & n_river(x4) & Actor(e1,x2) & v_paddle(e1) & (x1 = x2) & n_people(x1))
exists p1 x1.(exists x2.(in(x1,x2) & n_canoe(x2)) & n_people(x1))