A man in a green shirt is watching a policeman talking to tow other men with skateboards.
A police officer is walking into a building.
The police officer is either actively walking into a building or passively speaking to the men with skateboards, not both at the same time.
exists e2 e1 p1 s1 x1 x2 x3 x4 x5.(Theme(e2,x3) & Actor(e2,x1) & v_watch(e2) & Topic(e1,p1) & exists e3 x6 x7.(Theme(e3,x6) & Actor(e3,x4) & v_tow(e3) & with(x6,x7) & n_skateboard(x7) & -(x6 = x1) & n_man(x6)) & n_man(x1) & n_man(x1) & Actor(e1,x5) & v_talk(e1) & (x3 = x5) & (x3 = x4) & n_policeman(x3) & in(x1,x2) & n_shirt(x2) & a_green(s1) & Theme(s1,x2))
exists e1 x1 x2 x3.(into(e1,x3) & n_building(x3) & Actor(e1,x1) & v_walk(e1) & n_officer(x1) & of(x1,x2) & n_police(x2))