A rock climber checks his rope before holding on to the next spot on the rock.
A rock climber rubs his hand along his rope.
Checks doesn't necessarily imply rubs.
(-x)
exists e1 x1 x2 x3 x4.(along(e1,x4) & n_rope(x4) & of(x4,x1) & n_male(x1) & n_male(x1) & Theme(e1,x3) & Actor(e1,x1) & v_rub(e1) & n_hand(x3) & of(x3,x1) & n_climber(x1) & of(x1,x2) & n_rock(x2))