Three young boys with their arms around eachothers shoulders.
Three boys are hugging because they are sad.
Just because the boys have their arms around each others does not imply that they are hugging.
exists s1 x1 x2 x3 x4.(a_topic(x1) & with(x1,x2) & around(x2,x3) & n_shoulder(x3) & of(x3,x4) & n_eachother(x4) & n_arm(x2) & of(x2,x1) & n_thing(x1) & n_boy(x1) & a_young(s1) & Theme(s1,x1) & card_eq_3(x1))
exists e1 p1 x1.(exists s1.(Theme(s1,x1) & a_sad(s1)) & n_thing(x1) & because(e1,p1) & Actor(e1,x1) & v_hug(e1) & n_boy(x1) & card_eq_3(x1))