Two men building a new chimney.
The men don't know how to build a chimney.
The men may be very skilled and actually know how to build the chimney instead of not knowing.
exists e1 s1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_build(e1) & n_chimney(x3) & a_new(s1) & Theme(s1,x3) & (x1 = x2) & n_man(x1) & card_eq_2(x1))
exists x1.(n_man(x1) & -exists e1 x2.(Topic(e1,x2) & Actor(e1,x1) & v_know(e1) & n_manner(x2) & exists e2 x3 x4.(Theme(e2,x4) & Actor(e2,x3) & v_build(e2) & n_chimney(x4))))