A man with a big backpack is walking through a grass trail up a hill.
A sad man with a big backpack is walking through a grass trail up a hill.
Is walking through a grass trail repeats is walking through a grass trail.
exists e1 s1 x1 x2 x3 x4 x5.(up(e1,x5) & n_hill(x5) & through(e1,x3) & n_trail(x3) & of(x3,x4) & n_grass(x4) & Actor(e1,x1) & v_walk(e1) & with(x1,x2) & n_backpack(x2) & a_big(s1) & Theme(s1,x2) & n_man(x1))
exists e1 s1 s2 x1 x2 x3 x4 x5.(up(e1,x5) & n_hill(x5) & through(e1,x3) & n_trail(x3) & of(x3,x4) & n_grass(x4) & Actor(e1,x1) & v_walk(e1) & with(x1,x2) & n_backpack(x2) & a_big(s2) & Theme(s2,x2) & n_man(x1) & a_sad(s1) & Theme(s1,x1))