A man sitting on a subway.
A man is heading home on the subway.
The man can be headed to other destinations other than home (work, shopping, friend's place)
exists e1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_subway(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_man(x1))
exists e1 x1 x2 x3.(n_subway(x3) & on(e1,x3) & Time(e1,x2) & n_home(x2) & Actor(e1,x1) & v_head(e1) & n_man(x1))