A person walks across a stoned path.
A person walking along a path.
Sentence 2 restates what Sentence 1 has already said, that a person walks along a path.
exists e2 e1 x1 x2.(across(e1,x2) & n_path(x2) & Theme(e2,x2) & v_stone(e2) & Actor(e1,x1) & v_walk(e1) & n_person(x1))
exists e1 x1 x2 x3.(a_topic(x1) & along(e1,x3) & n_path(x3) & Actor(e1,x2) & v_walk(e1) & (x1 = x2) & n_person(x1))