The workers in the maintenance department continued to clean the area after heavy rains.
The workers in the business department stopped cleaning after the heavy rains ended.
The maintenance department is not the business department.
exists e1 p1 s1 x1 x2 x3 x4 x5.(n_area(x5) & n_department(x2) & of(x2,x3) & n_maintenance(x3) & n_worker(x1) & after(e1,x4) & n_rain(x4) & a_heavy(s1) & Theme(s1,x4) & Topic(e1,p1) & Actor(e1,x1) & v_continue(e1) & exists e2.(Theme(e2,x5) & Actor(e2,x1) & v_clean(e2)) & in(x1,x2))
exists e1 p1 s1 x1 x2 x3 x4.(n_rain(x4) & a_heavy(s1) & Theme(s1,x4) & n_department(x2) & of(x2,x3) & n_business(x3) & n_worker(x1) & exists e2 e3 x5.(after(e2,x4) & Theme(e3,x5) & v_end(e3) & (x4 = x5) & Actor(e2,x1) & v_clean(e2)) & Topic(e1,p1) & Actor(e1,x1) & v_stop(e1) & in(x1,x2))