A police officer is monitoring a by stander while guarding a building.
The two people are both laying down.
People wouldn't be laying down while guarding a building, and a police officer wouldn't be laying down with a by stander.
exists e2 e1 x1 x2 x3 x4 x5.(while(e1,e2) & Theme(e2,x5) & Actor(e2,x1) & v_guard(e2) & n_building(x5) & by(e1,x4) & n_stander(x4) & Theme(e1,x3) & Actor(e1,x1) & v_monitor(e1) & n_a(x3) & n_officer(x1) & of(x1,x2) & n_police(x2))
exists e1 s1 s2 x1.(n_people(x1) & card_eq_2(x1) & a_both(s2) & Manner(e1,s2) & a_down(s1) & Manner(e1,s1) & Actor(e1,x1) & v_lay(e1))