A little boy in a red shirt and red shorts climbing a tree.
A little boy is climbing.
Little boy climbing in common in both sentences
exists e1 s1 s2 s3 x1 x2 x3 x4 x5 x6.(a_topic(x1) & in(x1,x2) & subset_of(x4,x2) & Theme(e1,x6) & Actor(e1,x5) & v_climb(e1) & n_tree(x6) & (x4 = x5) & n_shorts(x4) & a_red(s3) & Theme(s3,x4) & subset_of(x3,x2) & n_shirt(x3) & a_red(s2) & Theme(s2,x3) & n_boy(x1) & a_little(s1) & Theme(s1,x1))
exists e1 s1 x1.(Actor(e1,x1) & v_climb(e1) & n_boy(x1) & a_little(s1) & Theme(s1,x1))