A man attempting to fix a broken concrete wall.
A man working on a wall that is broken.
A man attempting to fix a broken wall is the same as a man working on a wall that is broken.
exists e1 p1 x1 x2.(a_topic(x1) & Topic(e1,p1) & Actor(e1,x2) & v_attempt(e1) & exists e2 s1 x3 x4.(Theme(e2,x3) & Actor(e2,x2) & v_fix(e2) & n_wall(x3) & of(x3,x4) & n_concrete(x4) & a_broken(s1) & Theme(s1,x3)) & (x1 = x2) & n_man(x1))
exists e1 e2 x1 x2 x3 x4.(a_topic(x1) & on(e1,x3) & Theme(e2,x4) & v_break(e2) & (x3 = x4) & n_wall(x3) & Actor(e1,x2) & v_work(e1) & (x1 = x2) & n_man(x1))