Physically challenged person sitting on his wheelchair in a park.
A person sitting outside.
Physically challenged person is a person and park is outside.
exists e1 e2 x1 x2 x3 x4.(a_topic(x1) & in(e2,x4) & n_park(x4) & on(e2,x3) & n_wheelchair(x3) & of(x3,x1) & n_male(x1) & Actor(e2,x2) & v_sit(e2) & (x1 = x2) & n_person(x1) & Theme(e1,x1) & v_challenge(e1) & r_physically(x1))
exists e1 p1 x1 x2.(a_topic(x1) & exists s1.(Theme(s1,x2) & a_outside(s1)) & Topic(e1,p1) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_person(x1))