There are five people in the picture, two guys talking near a sign for free advice, a man and women facing away and another man on a phone in the background.
The people do not know each other.
It is not necessarily true that the people in the picture don't know each other.
exists p1 x1 x3 x6.(n_background(x6) & n_picture(x3) & exists e1 e2 p2 s1 x2 x4 x5 x7 x8 x9 x10 x11 x12 x13 x14 x15.((x1 = x2) & rel(x2,x4) & near(e1,x7) & rel(x7,x9) & subset_of(x11,x9) & subset_of(x14,x11) & on(x14,x15) & n_phone(x15) & n_man(x14) & -(x14 = x10) & n_man(x10) & n_man(x10) & subset_of(x12,x11) & exists s2.(Theme(s2,x13) & a_away(s2)) & Topic(e2,p2) & Actor(e2,x13) & v_face(e2) & (x12 = x13) & n_woman(x12) & subset_of(x10,x9) & for(x7,x8) & n_advice(x8) & a_free(s1) & Theme(s1,x8) & n_sign(x7) & in(e1,x6) & Actor(e1,x5) & v_talk(e1) & (x4 = x5) & n_guy(x4) & card_eq_2(x4) & in(x2,x3) & n_people(x2) & card_eq_5(x2)))
exists x1.(n_people(x1) & -all x2.(n_other(x2) -> exists e1.(Theme(e1,x2) & Actor(e1,x1) & v_know(e1))))