A person wearing a red coat snowboards down a snowy hill.
A person is not wearing a red coat
The person is either wearing a red coat or not wearing a red coat.
exists e1 e2 s1 s2 s3 x1 x2 x3 x4.(a_down(s3) & Manner(e2,s3) & Theme(e2,x4) & Actor(e2,x1) & v_snowboard(e2) & n_hill(x4) & a_snowy(s2) & Theme(s2,x4) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_coat(x3) & a_red(s1) & Theme(s1,x3) & (x1 = x2) & n_person(x1))
exists x1.(-exists e1 s1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_coat(x2) & a_red(s1) & Theme(s1,x2)) & n_person(x1))