a man running track
A man is in a marathon.
The man is not necessarily running for a marathon.
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_run(e1) & n_track(x3) & (x1 = x2) & n_man(x1))
exists p1 x1.(exists x2.(in(x1,x2) & n_marathon(x2)) & n_man(x1))