Two kids are riding camels nearby rural structures overlooked by mountains.
Two children are riding horses.
The kids cannot be riding both horses and camels at the same time
exists e1 e2 s1 s2 x1 x2 x3 x4 x5.(Theme(e2,x2) & Actor(e2,x1) & v_ride(e2) & Actor(e1,x5) & n_mountain(x5) & Theme(e1,x4) & v_overlook(e1) & (x2 = x4) & n_structure(x2) & a_rural(s2) & Theme(s2,x2) & a_nearby(s1) & Theme(s1,x2) & of(x2,x3) & n_camel(x3) & n_kid(x1) & card_eq_2(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_horse(x2) & n_child(x1) & card_eq_2(x1))