The lady with the brown shirt on is talking with the guy with the white shirt on the sidewalk.
A couple of people are talking in the building.
A sidewalk is not inside the building.
exists e1 s1 s2 s3 x1 x2 x3 x4 x5.(n_sidewalk(x5) & n_shirt(x2) & n_shirt(x2) & a_white(s3) & Theme(s3,x2) & n_guy(x4) & a_brown(s1) & Theme(s1,x2) & n_lady(x1) & with(e1,x4) & with(x4,x2) & on(x2,x5) & Actor(e1,x1) & v_talk(e1) & with(x1,x2) & Theme(s2,x3) & a_on(s2) & (x2 = x3))
exists e1 x1 x2 x3.(n_building(x3) & in(e1,x3) & Actor(e1,x1) & v_talk(e1) & of(x1,x2) & n_people(x2) & n_couple(x1))