A man is in midair, skiing.
The man ran into a tree and cut his head.
Remark of man running into a tree contradicts man in midair skiing in first sentence.
exists p1 x1.(exists x2 x3.(in(x1,x2) & rel(x2,x3) & n_skiing(x3) & n_midair(x2)) & n_man(x1))
exists e2 e1 x1 x2 x3.(n_head(x3) & of(x3,x1) & n_male(x1) & n_man(x1) & Theme(e2,x3) & Actor(e2,x1) & v_cut(e2) & into(e1,x2) & n_tree(x2) & Actor(e1,x1) & v_run(e1))