A man follows his black and white dog as it takes on an obstacle course.
A man is with his dog.
If the man follows his dog it implies that he is with the dog.
exists e1 p1 s1 s2 x1 x2.(exists e2 x3 x4.(on(e2,x3) & n_course(x3) & of(x3,x4) & n_obstacle(x4) & Actor(e2,x1) & v_take(e2)) & n_thing(x1) & as(e1,p1) & Theme(e1,x2) & Actor(e1,x1) & v_follow(e1) & n_dog(x2) & a_white(s2) & Theme(s2,x2) & a_black(s1) & Theme(s1,x2) & of(x2,x1) & n_male(x1) & n_man(x1))
exists p1 x1 x2.(with(x1,x2) & n_dog(x2) & of(x2,x1) & n_male(x1) & n_man(x1))