A child wearing a helmet and a climbing harness is climbing the rock wall.
child enjoys his first climb
Wearing safety gear does not imply that it is his first climb.
exists e1 e3 e2 x1 x2 x3 x4 x5 x6 x7.(n_wall(x6) & of(x6,x7) & n_rock(x7) & Theme(e3,x6) & Actor(e3,x1) & v_climb(e3) & subset_of(x5,x1) & n_harness(x5) & Actor(e2,x5) & v_climb(e2) & subset_of(x2,x1) & Theme(e1,x4) & Actor(e1,x3) & v_wear(e1) & n_helmet(x4) & (x2 = x3) & n_child(x2))
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_enjoy(e1) & n_climb(x2) & a_first(s1) & Theme(s1,x2) & of(x2,x1) & n_male(x1) & n_child(x1))