Eight people are on an escalator going up or down.
A group of friends taking the escalator sideways.
Eight people does not imply that they are a group of friends.
exists p1 x1.(exists x2.(on(x1,x2) & (exists e1 s1 x3.(a_up(s1) & Manner(e1,s1) & Actor(e1,x3) & v_go(e1) & (x2 = x3)) | exists e2 s2 x4.(a_down(s2) & Manner(e2,s2) & Actor(e2,x4) & v_go(e2) & (x2 = x4))) & n_escalator(x2)) & n_people(x1) & card_eq_8(x1))
exists e1 x1 x2 x3 x4 x5.(n_sideway(x4) & of(x4,x5) & n_escalator(x5) & a_topic(x1) & Theme(e1,x4) & Actor(e1,x3) & v_take(e1) & (x1 = x3) & of(x1,x2) & n_friend(x2) & n_group(x1))