Two men are sitting on the ground and going through their backpacks.
The backpacks are green.
Sentence 1 is missing green backpacks
exists e2 e1 x1 x2 x3 x4.(n_backpack(x4) & of(x4,x2) & n_thing(x2) & n_ground(x2) & through(e2,x4) & Actor(e2,x3) & v_go(e2) & n_man(x3) & card_eq_2(x3) & on(e1,x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1) & card_eq_2(x1))
exists s1 x1.(n_backpack(x1) & Theme(s1,x1) & a_green(s1))