Workers dig deeply into a rock and stone hole with tools placed on the ground before them.
The work is difficult.
Workers who dig deeply don't necessarily consider the work being difficult.
exists e1 e2 s1 x1 x2 x3 x4 x5 x6 x7 x8.(n_thing(x8) & n_ground(x8) & with(e1,x6) & before(e2,x8) & on(e2,x8) & Theme(e2,x7) & v_place(e2) & (x6 = x7) & n_tool(x6) & a_deeply(s1) & Manner(e1,s1) & into(e1,x2) & n_hole(x4) & of(x4,x5) & n_stone(x5) & n_rock(x3) & subset_of(x4,x2) & subset_of(x3,x2) & Actor(e1,x1) & v_dig(e1) & n_worker(x1))
exists s1 x1.(n_work(x1) & Theme(s1,x1) & a_difficult(s1))