Two workers are working with a tool and attaching an item to stone.
The boy swims in the lake.
A boy who swim in a lake is not two workers working on stone.
exists e2 e1 p1 x1 x2 x3 x4 x5.(Topic(e2,p1) & exists e3.(Actor(e3,x3) & v_stone(e3)) & Theme(e2,x5) & Actor(e2,x4) & v_attach(e2) & n_item(x5) & n_worker(x4) & card_eq_2(x4) & n_worker(x3) & card_eq_2(x3) & with(e1,x2) & n_tool(x2) & Actor(e1,x1) & v_work(e1) & n_worker(x1) & card_eq_2(x1))
exists e1 x1 x2.(n_lake(x2) & n_boy(x1) & in(e1,x2) & Actor(e1,x1) & v_swim(e1))