A person in red pants skis down a mountain.
The pants are green
One cannot wear red pants and blue pants simultaneously.
exists e1 s1 s2 x1 x2 x3.(a_down(s2) & Manner(e1,s2) & Theme(e1,x3) & Actor(e1,x1) & v_ski(e1) & n_mountain(x3) & in(x1,x2) & n_pants(x2) & a_red(s1) & Theme(s1,x2) & n_person(x1))
exists s1 x1.(n_pants(x1) & Theme(s1,x1) & a_green(s1))