Several people are crossing a street near a yield sign.
Some people are playing soccer in the park.
Crossing a street and playing soccer in the park cannot occur simultaneously.
exists e1 s1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_cross(e1) & near(x2,x3) & n_sign(x3) & of(x3,x4) & n_yield(x4) & n_street(x2) & n_people(x1) & a_several(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(n_park(x3) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_soccer(x2) & n_people(x1))