A person is working in the garden.
gardener is working
If a person is working in the garden, it is paraphrasing that a gardener is working.
exists e1 x1 x2.(n_garden(x2) & in(e1,x2) & Actor(e1,x1) & v_work(e1) & n_person(x1))
exists e1 x1.(Actor(e1,x1) & v_work(e1) & n_gardener(x1))