A man and woman are on a gray and white rowboat.
A couple completes in a coed rowing race.
It cannot be inferred that the man and woman are a couple completing a coed rowing race.
exists p1 x1 x2 x3.(exists s1 s2 x4.(on(x1,x4) & n_rowboat(x4) & a_white(s2) & Theme(s2,x4) & a_gray(s1) & Theme(s1,x4)) & n_woman(x3) & n_man(x2) & subset_of(x3,x1) & subset_of(x2,x1))
exists e1 s1 x1 x2 x3.(in(e1,x2) & n_race(x2) & of(x2,x3) & n_rowing(x3) & a_coed(s1) & Theme(s1,x2) & Actor(e1,x1) & v_complete(e1) & n_couple(x1))