Two people in life jackets in a rowboat
The people are fishing.
The people are not necessarily fishing.
exists x1 x2 x3 x4.(a_topic(x1) & in(x1,x2) & in(x2,x4) & n_rowboat(x4) & n_jacket(x2) & of(x2,x3) & n_life(x3) & n_people(x1) & card_eq_2(x1))
exists p1 x1.(n_people(x1) & exists x2.((x1 = x2) & n_fishing(x2)))