People under a tent at a reception.
Two bears are climbing a tree.
People and bears are distinctly different animals, and neither group can be simultaneously under a tent while climbing a tree
exists x1 x2 x3.(a_topic(x1) & under(x1,x2) & at(x2,x3) & n_reception(x3) & n_tent(x2) & n_people(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_climb(e1) & n_tree(x2) & n_bear(x1) & card_eq_2(x1))