One person is sitting on a large rock while another person is standing nearby
The couple enjoyed their trip to the Grand Canyon.
Just because a person is on a large rock doesn't mean they are at the Grand Canyon.
exists e1 p1 s1 x1 x2.(exists e2 s2 x3.(a_nearby(s2) & Manner(e2,s2) & Actor(e2,x3) & v_stand(e2) & n_person(x3) & -(x3 = x1)) & n_person(x1) & n_person(x1) & while(e1,p1) & on(e1,x2) & n_rock(x2) & a_large(s1) & Theme(s1,x2) & Actor(e1,x1) & v_sit(e1) & card_eq_1(x1))
exists e1 x1 x2 x3 x4.(ne_geo_canyon(x3) & (x3 = x4) & ne_geo_grand(x4) & n_trip(x2) & of(x2,x1) & n_thing(x1) & n_couple(x1) & Theme(e1,x2) & Actor(e1,x1) & v_enjoy(e1) & to(x2,x3))