A man on a very tall unicycle entertains the crowd.
There is a person riding a unicycle.
A man is a person, and "on a very tall unicycle entertains" implies he is riding it.
exists e1 s1 x1 x2 x3.(n_crowd(x3) & Theme(e1,x3) & Actor(e1,x1) & v_entertain(e1) & on(x1,x2) & n_unicycle(x2) & a_tall(s1) & Theme(s1,x2) & r_very(x2) & n_man(x1))
exists p1 x1 e1 x2 x3 x4.((x1 = x2) & Theme(e1,x4) & Actor(e1,x3) & v_ride(e1) & n_unicycle(x4) & (x2 = x3) & n_person(x2))