A skateboarder doing a trick in front of a ramp with three people in the background.
A friend decided to skateboard in front of his friends
This doesn't follow that three people in the background are his friends.
exists e1 x1 x2 x3 x4 x5 x6 x7.(n_background(x7) & a_topic(x1) & in(e1,x7) & with(e1,x6) & n_people(x6) & card_eq_3(x6) & Theme(e1,x3) & Actor(e1,x2) & v_do(e1) & in(x3,x4) & of(x4,x5) & n_ramp(x5) & n_front(x4) & n_trick(x3) & (x1 = x2) & n_skateboarder(x1))
exists e1 p1 x1 x3.(Topic(e1,p1) & Actor(e1,x1) & v_decide(e1) & exists e2 x2.(in(e2,x2) & of(x2,x3) & n_front(x2) & Actor(e2,x1) & v_skateboard(e2)) & n_friend(x3) & of(x3,x1) & n_male(x1) & n_friend(x1))