A man does a wheelie on a motorcycle while a crowd watches.
A woman does a wheelie on a motorcycle while a few people watch.
It is either a man or a woman. There is either a crowd of people, or only a few people.
exists e1 p1 x1 x2 x3.(exists e2 x4.(Actor(e2,x4) & v_watch(e2) & n_crowd(x4)) & while(e1,p1) & on(e1,x3) & n_motorcycle(x3) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_wheelie(x2) & n_man(x1))
exists e1 e2 s1 x1 x2 x3 x4 x5 x6.(Theme(e2,x6) & Actor(e2,x1) & v_watch(e2) & n_thing(x6) & while(e1,x5) & n_people(x5) & a_few(s1) & Theme(s1,x5) & on(e1,x4) & n_motorcycle(x4) & Theme(e1,x3) & Actor(e1,x2) & v_do(e1) & n_wheelie(x3) & (x1 = x2) & n_woman(x1))