A person canoeing down rapids lined with rocks.
A person's canoe has a leak.
Just because a person is canoeing down rocks it does not mean the person's canoe has a leak.
exists e1 e2 s1 x1 x2 x3 x4 x5.(a_topic(x1) & a_down(s1) & Manner(e2,s1) & Theme(e2,x3) & Actor(e2,x2) & v_canoe(e2) & with(e1,x5) & n_rock(x5) & Theme(e1,x4) & v_line(e1) & (x3 = x4) & n_rapid(x3) & (x1 = x2) & n_person(x1))
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x2) & v_have(e1) & n_leak(x3) & n_canoe(x2) & of(x2,x1) & n_person(x1))