two people share a hug.
Two people are hugging because they have not seem each other in a while.
You can not infer they have not seem each other in a while.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_share(e1) & n_hug(x2) & n_people(x1) & card_eq_2(x1))
exists e1 p1 x1 x2.(all x3.(n_other(x3) -> exists e3 x4.(in(e3,x4) & n_while(x4) & Theme(e3,x3) & Actor(e3,x1) & v_seem(e3))) & -exists e2.(Actor(e2,x1) & v_have(e2)) & n_thing(x1) & because(e1,p1) & Actor(e1,x2) & v_hug(e1) & (x1 = x2) & n_people(x1) & card_eq_2(x1))