A man in a green hat is jumping down a snow covered hill.
A guy without any headcovering is rolling down a snowy hill.
One cannot both wear a hat and go without any headcovering. One cannot be jumping and rolling concurrently.
exists e2 e1 s1 s2 x1 x2 x3 x4.(a_down(s2) & Manner(e2,s2) & Theme(e2,x3) & Actor(e2,x1) & v_jump(e2) & n_hill(x3) & Theme(e1,x3) & v_cover(e1) & of(x3,x4) & n_snow(x4) & in(x1,x2) & n_hat(x2) & a_green(s1) & Theme(s1,x2) & n_man(x1))
exists e1 s1 s2 x1 x2.(a_down(s2) & Manner(e1,s2) & Theme(e1,x2) & Actor(e1,x1) & v_roll(e1) & n_hill(x2) & a_snowy(s1) & Theme(s1,x2) & -all x3.(n_headcovering(x3) -> with(x1,x3)) & n_guy(x1))