Man rowing a boat.
A man in his boat.
The man needs to be in his boat to be able to row his boat.
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_row(e1) & n_boat(x3) & (x1 = x2) & n_man(x1))
exists x1 x2.(a_topic(x1) & in(x1,x2) & n_boat(x2) & of(x2,x1) & n_male(x1) & n_man(x1))