A man wearing no shirt rides a skateboard with a brown dog.
The man skateboards.
man rides a skateboard means man skateboards
exists e1 s1 x1 x2 x3 x4.(Theme(e1,x3) & Actor(e1,x1) & v_ride(e1) & with(x3,x4) & n_dog(x4) & a_brown(s1) & Theme(s1,x4) & n_skateboard(x3) & -exists e2 x5.(Theme(e2,x5) & Actor(e2,x2) & v_wear(e2) & n_shirt(x5)) & (x1 = x2) & n_man(x1))
exists x1 x2.(n_skateboard(x1) & of(x1,x2) & n_man(x2) & a_topic(x1))