three Buddhists walk on the street.
People walking outside.
Buddhists are people.  Walking is a rephrasing for walk.  And, the Buddhists walk on the street so the Buddhists are outside.
exists e1 x1 x2.(n_street(x2) & on(e1,x2) & Theme(e1,x1) & v_walk(e1) & n_buddhist(x1) & card_eq_3(x1))
exists e1 s1 x1 x2.(a_topic(x1) & a_outside(s1) & Manner(e1,s1) & Actor(e1,x2) & v_walk(e1) & (x1 = x2) & n_people(x1))