A teenage boy wearing a white shirt is sitting down next to two other boys who are standing.
The three boys are rappelling down the side of a mountainside.
Sitting is not equal to rappelling a mountainside.
exists e2 e3 e1 s1 s2 x1 x2 x3 x4 x5 x6.(to(e2,x5) & Actor(e3,x6) & v_stand(e3) & (x5 = x6) & -(x5 = x1) & n_boy(x1) & n_boy(x1) & n_boy(x5) & card_eq_2(x5) & r_next(e2) & a_down(s2) & Manner(e2,s2) & Actor(e2,x1) & v_sit(e2) & Theme(e1,x4) & Actor(e1,x3) & v_wear(e1) & n_shirt(x4) & a_white(s1) & Theme(s1,x4) & (x1 = x3) & of(x1,x2) & n_teenage(x2))
exists e1 x1 x2 x3.(n_side(x2) & n_boy(x1) & card_eq_3(x1) & down(e1,x2) & of(x2,x3) & n_mountainside(x3) & Actor(e1,x1) & v_rappell(e1))