A singer performing live in concert.
The singer had to cancel the concert.
Singer can not be performing live when the concert had cancel.
exists e1 s1 x1 x2 x3.(a_topic(x1) & in(e1,x3) & n_concert(x3) & a_live(s1) & Manner(e1,s1) & Actor(e1,x2) & v_perform(e1) & (x1 = x2) & n_singer(x1))
exists e1 p1 x1 x2.(n_concert(x2) & n_singer(x1) & Topic(e1,p1) & Actor(e1,x1) & v_have(e1) & exists e2.(Theme(e2,x2) & Actor(e2,x1) & v_cancel(e2)))