Chef with brown hair and beard picks out fruit.
The chef is an old man
Not all chefs are an old man.
exists s1 s2 x1 x2 x3 x4.(ne_nam_chef(s1) & a_topic(s1) & with(s1,x1) & out(x1,x4) & n_fruit(x4) & n_pick(x1) & of(x1,x3) & n_beard(x3) & of(x1,x2) & n_hair(x2) & a_brown(s2) & Theme(s2,x1))
exists p1 x1.(n_chef(x1) & exists s1 x2.((x1 = x2) & n_man(x2) & a_old(s1) & Theme(s1,x2)))