Customers wait in line while the workers in green shirts help them.
The customers have waited for a long time.
Not all customers waiting in line while the workers in green shirts help them have waited for a long time.
exists e1 p1 x1 x2 x3.(n_worker(x3) & exists e2 s1 x4.(Theme(e2,x1) & Actor(e2,x3) & v_help(e2) & in(x3,x4) & n_shirt(x4) & a_green(s1) & Theme(s1,x4)) & n_thing(x1) & while(e1,p1) & in(e1,x2) & n_line(x2) & Actor(e1,x1) & v_wait(e1) & n_customer(x1))
exists e1 s1 x1 x2.(n_customer(x1) & for(e1,x2) & n_time(x2) & a_long(s1) & Theme(s1,x2) & Actor(e1,x1) & v_wait(e1))