A man wearing a backpack tying his shoe on a hiking trail.
A man is outside.
Hiking trail implies outside, and a man wearing a backpack is a type of man.
exists e1 e2 x1 x2 x3 x4 x5 x6 x7.(a_topic(x1) & Theme(e2,x3) & Actor(e2,x2) & v_wear(e2) & on(e1,x6) & n_trail(x6) & of(x6,x7) & n_hiking(x7) & Theme(e1,x5) & Actor(e1,x4) & v_tie(e1) & n_shoe(x5) & of(x5,x1) & n_male(x1) & (x3 = x4) & n_backpack(x3) & (x1 = x2) & n_man(x1))
exists s1 x1.(Theme(s1,x1) & a_outside(s1) & n_man(x1))