A street with people riding bikes around big building.
People are riding horses down the street.
People can not be riding bikes and horses at the same time.
exists e1 s1 x1 x2 x3 x4 x5.(a_topic(x1) & with(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_ride(e1) & around(x4,x5) & n_building(x5) & a_big(s1) & Theme(s1,x5) & n_bike(x4) & (x2 = x3) & n_people(x2) & n_street(x1))
exists e1 x1 x2 x3.(n_street(x3) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & down(x2,x3) & n_horse(x2) & n_people(x1))