Two people in black leather ride motorcycles.
Two people are outside.
Riding a motorcycle is done outside.
exists s1 x1 x2 x3 x4.(a_topic(x1) & in(x1,x2) & n_motorcycle(x2) & of(x2,x4) & n_ride(x4) & of(x2,x3) & n_leather(x3) & a_black(s1) & Theme(s1,x2) & n_people(x1) & card_eq_2(x1))
exists s1 x1.(Theme(s1,x1) & a_outside(s1) & n_people(x1) & card_eq_2(x1))