The woman is flashing a peace sign.
A woman is holding a sign at a protest.
It cannot be inferred that the woman is holding a sign at a protest.
exists e1 x1 x2 x3.(n_woman(x1) & Theme(e1,x2) & Actor(e1,x1) & v_flash(e1) & n_sign(x2) & of(x2,x3) & n_peace(x3))
exists e1 x1 x2 x3.(at(e1,x3) & n_protest(x3) & Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & n_sign(x2) & n_woman(x1))