A couple in a red canoe paddle down a rough river lined with trees.
The couple paddle hard.
A couple on rough waters does not imply that they paddle their canoe hard.
exists e1 s1 s2 x1 x2 x3 x4 x5 x6.(a_topic(x1) & with(e1,x6) & n_tree(x6) & Theme(e1,x5) & v_line(e1) & (x1 = x5) & down(x1,x4) & n_river(x4) & a_rough(s2) & Theme(s2,x4) & in(x1,x2) & n_paddle(x2) & of(x2,x3) & n_canoe(x3) & a_red(s1) & Theme(s1,x2) & n_couple(x1))
exists s1 x1 x2.(n_paddle(x1) & of(x1,x2) & n_couple(x2) & Theme(s1,x1) & a_hard(s1))