Several people having a good time while exercising.
There are several irritated looking people exercising.
The same people cannot be irritated while excercising and at the same time having a good time.
exists e2 e1 s1 s2 x1 x2 x3.(a_topic(x1) & while(e1,e2) & Actor(e2,x2) & v_exercise(e2) & Theme(e1,x3) & Actor(e1,x2) & v_have(e1) & n_time(x3) & a_good(s2) & Theme(s2,x3) & (x1 = x2) & n_people(x1) & a_several(s1) & Theme(s1,x1))
exists p1 x1 e2 e1 s1 s2 x2 x3.((x1 = x2) & Actor(e2,x3) & v_exercise(e2) & (x2 = x3) & n_people(x2) & Actor(e1,x2) & v_look(e1) & a_irritated(s2) & Theme(s2,x2) & a_several(s1) & Theme(s1,x2))