Two men with backpacks hiking by a large tree.
Two men are carrying a back pack.
Two men are carrying backpacks for hiking
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & with(x1,x2) & by(e1,x4) & n_tree(x4) & a_large(s1) & Theme(s1,x4) & Actor(e1,x3) & v_hike(e1) & (x2 = x3) & n_backpack(x2) & n_man(x1) & card_eq_2(x1))
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_carry(e1) & n_pack(x2) & a_back(s1) & Theme(s1,x2) & n_man(x1) & card_eq_2(x1))