People are being photographed while mountain climbing or hiking.
People sitting around a campfire on a mountain.
One cannot be climbing mountain while sitting around campfire.
exists e1 x1 x2 x3.(while(e1,x2) & (n_climb(x2) | n_hike(x2)) & of(x2,x3) & n_mountain(x3) & Theme(e1,x1) & v_photograph(e1) & n_people(x1))
exists e1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x4) & n_mountain(x4) & around(e1,x3) & n_campfire(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_people(x1))