The worker is standing on a ladder on a city sidewalk repairing the building with a large drill.
a man repairs a cracked wall
Repairing a building don't necessarily imply repairs a cracked wall.
exists e1 e2 s1 x1 x2 x3 x4 x5 x6.(n_building(x5) & n_worker(x1) & for(e1,e2) & with(e2,x6) & n_drill(x6) & a_large(s1) & Theme(s1,x6) & Theme(e2,x5) & Actor(e2,x1) & v_repair(e2) & on(e1,x3) & n_sidewalk(x3) & of(x3,x4) & n_city(x4) & on(e1,x2) & n_ladder(x2) & Actor(e1,x1) & v_stand(e1))
all x1 s1.((n_wall(x1) & a_cracked(s1) & Theme(s1,x1)) -> exists x2 x3.(a_topic(x2) & for(x2,x1) & n_repair(x2) & of(x2,x3) & n_man(x3)))