Girl in plaid shirt riding a unicycle.
A girl is riding.
Riding a unicycle is considered riding.
exists e1 s1 s2 x1 x2 x3.(ne_nam_girl(s1) & a_topic(s1) & in(s1,x1) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & n_unicycle(x3) & (x1 = x2) & n_shirt(x1) & a_plaid(s2) & Theme(s2,x1))
exists e1 x1.(Actor(e1,x1) & v_ride(e1) & n_girl(x1))