premise: Man straining to climb cliff face.
hypothesis: Man reaching up to secure a handhold on the cliff face.
explanation_1: Staining to climb a cliff does not mean the man is reaching up to secure a handhold.
explanation_2: Secure might be his position and the cliff face doesn't need to be like far above from ground.
explanation_3: Reaching to a secure handhold is not always a strenuous maneuver
premise_logic: exists e1 p1 x1 x2.(a_topic(x1) & Topic(e1,p1) & Actor(e1,x2) & v_strain(e1) & exists e2 x3 x4.(Theme(e2,x3) & Actor(e2,x2) & v_climb(e2) & n_face(x3) & of(x3,x4) & n_cliff(x4)) & (x1 = x2) & n_man(x1))
hypothesis_logic: exists e1 p1 s1 x1 x2 x4 x5.(n_face(x4) & of(x4,x5) & n_cliff(x5) & a_topic(x1) & a_up(s1) & Manner(e1,s1) & Topic(e1,p1) & Actor(e1,x2) & v_reach(e1) & exists e2 x3.(Theme(e2,x3) & Actor(e2,x2) & v_secure(e2) & on(x3,x4) & n_handhold(x3)) & (x1 = x2) & n_man(x1))