A man is snowboarding down a snowy hill.
A woman is sitting.
A man snowboarding is not a woman sitting.
exists e1 s1 s2 x1 x2.(a_down(s2) & Manner(e1,s2) & Theme(e1,x2) & Actor(e1,x1) & v_snowboard(e1) & n_hill(x2) & a_snowy(s1) & Theme(s1,x2) & n_man(x1))
exists e1 x1.(Actor(e1,x1) & v_sit(e1) & n_woman(x1))