A man is doing a headstand, balanced on a bottle, on a street corner.
A man is sitting down at a table.
Headstands are an upright posture,  whereas sitting down is not.
exists e1 e2 x1 x2 x3 x4 x5 x6.(on(e2,x5) & n_corner(x5) & of(x5,x6) & n_street(x6) & Theme(e2,x2) & Actor(e2,x1) & v_do(e2) & on(e1,x4) & n_bottle(x4) & Theme(e1,x3) & v_balance(e1) & (x2 = x3) & n_headstand(x2) & n_man(x1))
exists e1 s1 x1 x2.(at(e1,x2) & n_table(x2) & a_down(s1) & Manner(e1,s1) & Actor(e1,x1) & v_sit(e1) & n_man(x1))