Tourists observe a geographic landmark through viewfinders.
Two people are outdoors.
Tourists denote more than one people and so there are two people (at least) outdoors as geographic landmark being observed.
exists e1 s1 x1 x2 x3.(through(e1,x3) & n_viewfinder(x3) & Theme(e1,x2) & Actor(e1,x1) & v_observe(e1) & n_landmark(x2) & a_geographic(s1) & Theme(s1,x2) & n_tourist(x1))
exists p1 x1.(exists x2.((x1 = x2) & n_outdoors(x2)) & n_people(x1) & card_eq_2(x1))