Fishermen repairing their fish nets.
Fishermen work on their nets.
To be repairing something also means to work on something.
exists e1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_repair(e1) & n_net(x3) & of(x3,x4) & n_fish(x4) & of(x3,x1) & n_thing(x1) & (x1 = x2) & n_fisherman(x1))
exists x1 x2 x3.(a_topic(x1) & on(x1,x3) & n_net(x3) & of(x3,x1) & n_thing(x1) & n_work(x1) & (x1 = x2) & ne_nam_fishermen(x2))