A man climbing the side of a cliff.
He does not know how to climb cliffs.
A man would not be able to climb cliffs if he does not know how to climb cliffs.
exists e1 x1 x2 x3 x4.(n_side(x3) & a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_climb(e1) & of(x3,x4) & n_cliff(x4) & (x1 = x2) & n_man(x1))
exists x1.(n_male(x1) & -exists e1 x2.(Topic(e1,x2) & Actor(e1,x1) & v_know(e1) & n_manner(x2) & exists e2 x3 x4.(Theme(e2,x4) & Actor(e2,x3) & v_climb(e2) & n_cliff(x4))))