A young boy in a green shirt is strapped in a harness climbing a rock wall.
There are multiple people on the rock wall.
One boy climbing on the wall does not mean that there are multiple people on the wall.
exists e1 e2 s1 s2 x1 x2 x3 x4 x5 x6.(in(e1,x3) & Theme(e2,x5) & Actor(e2,x4) & v_climb(e2) & n_wall(x5) & of(x5,x6) & n_rock(x6) & (x3 = x4) & n_harness(x3) & Theme(e1,x1) & v_strap(e1) & in(x1,x2) & n_shirt(x2) & a_green(s2) & Theme(s2,x2) & n_boy(x1) & a_young(s1) & Theme(s1,x1))
exists p1 x1 x2 x3.(n_wall(x2) & of(x2,x3) & n_rock(x3) & on(p1,x2) & exists s1 x4.((x1 = x4) & n_people(x4) & a_multiple(s1) & Theme(s1,x4)))