A man in red pants is carrying groceries on a motorcycle.
A man is on his way back from the grocery store.
Carrying groceries does not necessarily mean on his way back from the grocery store.
exists e1 s1 x1 x2 x3 x4.(Theme(e1,x3) & Actor(e1,x1) & v_carry(e1) & on(x3,x4) & n_motorcycle(x4) & n_grocery(x3) & in(x1,x2) & n_pants(x2) & a_red(s1) & Theme(s1,x2) & n_man(x1))
exists p1 x1 x2 x4 x5.(n_store(x4) & of(x4,x5) & n_grocery(x5) & exists x3.(on(x1,x2) & from(x3,x4) & back(x2,x3) & n_thing(x3)) & n_way(x2) & of(x2,x1) & n_male(x1) & n_man(x1))