Two people take in the scene as they stand together looking out over the canyon.
People looking at the grand canyon on a vacation.
Just because people are looking out on a canyon does not mean that they are on a vacation.  There is no indication of the canyon being a grand canyon.
exists e1 e2 p1 s1 x1 x2 x3 x4.(n_thing(x3) & n_scene(x4) & n_canyon(x3) & exists e3 s2.(a_together(s2) & Manner(e3,s2) & Actor(e3,x3) & v_stand(e3)) & as(e2,p1) & in(e2,x4) & Theme(e2,e1) & Actor(e2,x1) & v_take(e2) & a_out(s1) & Manner(e1,s1) & over(e1,x3) & Actor(e1,x2) & v_look(e1) & n_thing(x2) & n_people(x1) & card_eq_2(x1))
exists e1 s1 x1 x2 x3.(n_canyon(x2) & a_grand(s1) & Theme(s1,x2) & at(e1,x2) & on(x2,x3) & n_vacation(x3) & Actor(e1,x1) & v_look(e1) & n_people(x1))