A man and a boy preparing to go up a climbing wall.
A man and a boy are climbing the wall for the first time.
It's possible that the man and boy have been on a climbing wall previously, it's not necessarily the first time.
exists e1 p1 s1 x1 x2 x3.(a_topic(s1) & subset_of(x2,s1) & Topic(e1,p1) & Actor(e1,x3) & v_prepare(e1) & exists e2 e3 s2 x4.(a_up(s2) & Manner(e3,s2) & Theme(e3,x4) & Actor(e3,x3) & v_go(e3) & n_wall(x4) & Actor(e2,x4) & v_climb(e2)) & (x2 = x3) & n_boy(x2) & subset_of(x1,s1) & n_man(x1))
exists e1 s1 x1 x2 x3 x4 x5.(n_time(x5) & a_first(s1) & Theme(s1,x5) & n_wall(x4) & for(e1,x5) & Theme(e1,x4) & Actor(e1,x1) & v_climb(e1) & subset_of(x3,x1) & n_boy(x3) & subset_of(x2,x1) & n_man(x2))