A bearded man in a white t-shirt is riding a motorcycle.
The motorcycle is being driven by a large man with a beard.
A bearded man doesn't imply he's a large man with a beard.
exists e1 s1 s2 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_ride(e1) & n_motorcycle(x3) & in(x1,x2) & n_t-shirt(x2) & a_white(s2) & Theme(s2,x2) & n_man(x1) & a_bearded(s1) & Theme(s1,x1))
exists e1 s1 x1 x2 x3.(n_motorcycle(x1) & Actor(e1,x2) & with(x2,x3) & n_beard(x3) & n_man(x2) & a_large(s1) & Theme(s1,x2) & Theme(e1,x1) & v_drive(e1))