A man in a gray t-shirt and a woman in shorts and a black t-shirt stand in front of a monument.
People are on a field trip.
Just because they are in front of monument does not imply they are on field trip.
exists s1 s2 s3 s4 x1 x2 x3 x4 x5 x6 x7 x8.(a_topic(s1) & subset_of(x3,s1) & subset_of(x6,x3) & in(x6,x7) & of(x7,x8) & n_monument(x8) & n_front(x7) & n_stand(x6) & a_t-shirt(s4) & Theme(s4,x6) & a_black(s3) & Theme(s3,x6) & subset_of(x4,x3) & in(x4,x5) & n_shorts(x5) & n_woman(x4) & subset_of(x1,s1) & in(x1,x2) & n_t-shirt(x2) & a_gray(s2) & Theme(s2,x2) & n_man(x1))
exists p1 x1.(exists x2 x3.(on(x1,x2) & n_trip(x2) & of(x2,x3) & n_field(x3)) & n_people(x1))