A toddler is sitting down.
A toddler is sitting at a table.
Not all sitting down is at a table.
exists e1 s1 x1.(a_down(s1) & Manner(e1,s1) & Actor(e1,x1) & v_sit(e1) & n_toddler(x1))
exists e1 x1 x2.(at(e1,x2) & n_table(x2) & Actor(e1,x1) & v_sit(e1) & n_toddler(x1))