Three children writing intently in a classroom.
Children in a classroom are writing poetry.
Children in a classroom are not necessarily writing poetry.  Children writing intently are not necessarily writing poetry.
exists e1 s1 x1 x2 x3.(a_topic(x1) & a_intently(s1) & Manner(e1,s1) & in(e1,x3) & n_classroom(x3) & Actor(e1,x2) & v_write(e1) & (x1 = x2) & n_child(x1) & card_eq_3(x1))
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_write(e1) & n_poetry(x3) & in(x1,x2) & n_classroom(x2) & n_child(x1))