a man wearing black rides a unicycle.
A woman is on a unicycle.
it is either a man or a woman
exists x1 x2.(a_topic(x1) & all x3.(n_unicycle(x3) -> exists e1 s1 x4.(Theme(e1,x4) & Actor(e1,x2) & v_wear(e1) & for(x4,x3) & n_ride(x4) & a_black(s1) & Theme(s1,x4))) & (x1 = x2) & n_man(x1))
exists p1 x1.(exists x2.(on(x1,x2) & n_unicycle(x2)) & n_woman(x1))