A man in a green machine is cleaning a pump in front of the Drake hotel.
The pump in front of Drake hotel being cleaned.
The second sentence is the same as the first except it excludes what the the man is using a green machine, but still says a pump is being cleaned in front of the drake hotel
exists e1 s1 x1 x2 x3 x4 x5 x6.(n_hotel(x5) & (x5 = x6) & ne_org_drake(x6) & Theme(e1,x3) & Actor(e1,x1) & v_clean(e1) & in(x3,x4) & of(x4,x5) & n_front(x4) & n_pump(x3) & in(x1,x2) & n_machine(x2) & a_green(s1) & Theme(s1,x2) & n_man(x1))
exists e1 x1 x2 x3 x4 x5.(n_pump(x1) & a_topic(x1) & in(x1,x2) & of(x2,x3) & Theme(e1,x5) & v_clean(e1) & (x3 = x5) & n_hotel(x3) & (x3 = x4) & ne_geo_drake(x4) & n_front(x2))