A person wearing red and black leathers riding a motorcycle.
A man is riding a Harley-Davidson.
Riding a motorcycle doesn't imply that it's a Harley-Davidson
exists e2 e1 s1 s2 x1 x2 x3 x4 x5.(a_topic(x1) & Theme(e2,x3) & Actor(e2,x2) & v_wear(e2) & Theme(e1,x5) & Actor(e1,x4) & v_ride(e1) & n_motorcycle(x5) & (x3 = x4) & n_leather(x3) & a_black(s2) & Theme(s2,x3) & a_red(s1) & Theme(s1,x3) & (x1 = x2) & n_person(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_harley-davidson(x2) & n_man(x1))