A janitor flashes a smile while he cleans a replica small building with a vacuum cleaner.
janitor smiling while working
A janitor flashes a smile while he cleans must be smiling while working.
exists e1 p1 x1 x2.(exists e2 s1 x3 x4 x5 x6.(Theme(e2,x3) & Actor(e2,x1) & v_clean(e2) & with(x3,x5) & n_cleaner(x5) & of(x5,x6) & n_vacuum(x6) & n_building(x3) & a_small(s1) & Theme(s1,x3) & of(x3,x4) & n_replica(x4)) & n_male(x1) & while(e1,p1) & Theme(e1,x2) & Actor(e1,x1) & v_flash(e1) & n_smile(x2) & n_janitor(x1))
exists e2 e1 x1 x2.(a_topic(x1) & while(e1,e2) & Actor(e2,x2) & v_work(e2) & Actor(e1,x2) & v_smile(e1) & (x1 = x2) & n_janitor(x1))