One person in a room lighting a cigarette while holding a cat.
A person smokes because their cat's disease is severe.
The person lighting a cigarette doesn't implies he smokes it. The cat the person is holding might not have a disease that is severe.
exists e1 e2 x1 x2 x3 x4 x5.(a_topic(x1) & in(x1,x2) & while(e1,e2) & Theme(e2,x5) & Actor(e2,x3) & v_hold(e2) & n_cat(x5) & Theme(e1,x4) & Actor(e1,x3) & v_light(e1) & n_cigarette(x4) & (x2 = x3) & n_room(x2) & n_person(x1) & card_eq_1(x1))
exists e1 p1 x1 x2 x3.(exists s1.(Theme(s1,x3) & a_severe(s1)) & n_disease(x3) & of(x3,x2) & n_cat(x2) & of(x2,x1) & n_thing(x1) & because(e1,p1) & Actor(e1,x1) & v_smoke(e1) & n_person(x1))