The workers are surrounding a hole with a bucket.
The workers are standing around a hold.
Standing around a hold is a rephrasing of surrounding a hole.
exists e1 x1 x2 x3.(n_worker(x1) & Theme(e1,x2) & Actor(e1,x1) & v_surround(e1) & with(x2,x3) & n_bucket(x3) & n_hole(x2))
exists e1 x1 x2.(n_worker(x1) & around(e1,x2) & n_hold(x2) & Actor(e1,x1) & v_stand(e1))