A hotdog vendor looks sad.
A hotdog vendor ran out of hotdogs.
The hotdog vender may be sad for a reason other than running out of hotdogs.
exists e1 p1 x1 x2.(exists s1.(Theme(s1,x1) & a_sad(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_look(e1) & n_vendor(x1) & of(x1,x2) & n_hotdog(x2))
exists e1 x1 x2 x3.(of(e1,x3) & n_hotdog(x3) & r_out(e1) & Actor(e1,x1) & v_run(e1) & n_vendor(x1) & of(x1,x2) & n_hotdog(x2))