A man in a blue coat is propelled on his sled by two dogs.
the man is in a dog sled race.
A man is different than the man, it can be assumed with "the" we may know him and we don't know he is in a race.
exists e1 e2 s1 x1 x2 x3 x4 x5.(on(e1,x3) & Actor(e2,x5) & n_dog(x5) & card_eq_2(x5) & Theme(e2,x4) & v_sled(e2) & (x3 = x4) & n_his(x3) & Theme(e1,x1) & v_propel(e1) & in(x1,x2) & n_coat(x2) & a_blue(s1) & Theme(s1,x2) & n_man(x1))
exists p1 x1.(n_man(x1) & exists e1 x2 x3 x4.(in(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_sled(e1) & n_race(x4) & (x2 = x3) & n_dog(x2)))