A man is standing in the checkout line at a store.
The man just did groceries.
Standing in line at a checkout does not necessarily indicate just buying groceries.
exists e1 x1 x2 x3 x4.(n_line(x2) & of(x2,x3) & n_checkout(x3) & at(e1,x4) & n_store(x4) & in(e1,x2) & Actor(e1,x1) & v_stand(e1) & n_man(x1))
exists e1 s1 x1 x2.(n_man(x1) & a_just(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_grocery(x2))