A brown, black and white dog is on a obstacle course.
The dog weighs 50 pounds.
A dog doesn't have to weigh 50 pounds to be on an obstacle course. Not all dogs weigh 50 pounds.
exists p1 s1 s2 s3 s4 x1.(exists x2 x3.(on(x1,x2) & n_course(x2) & of(x2,x3) & n_obstacle(x3)) & n_dog(x1) & a_white(s4) & Theme(s4,x1) & a_black(s3) & Theme(s3,x1) & a_,(s2) & Theme(s2,x1) & a_brown(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_dog(x1) & Theme(e1,x2) & Actor(e1,x1) & v_weigh(e1) & n_pound(x2) & card_eq_50(x2))