( ( This ( extra ( diagnostic faculty ) ) ) ( ( makes ( ( the ( self-reproducing machine ) ) ( even ( more complex ) ) ) ) . ) )
(ROOT (S (NP (DT This) (JJ extra) (JJ diagnostic) (NN faculty)) (VP (VBZ makes) (S (NP (DT the) (JJ self-reproducing) (NN machine)) (ADJP (RB even) (RBR more) (JJ complex)))) (. .)))
This extra diagnostic faculty makes the self-reproducing machine even more complex.
(ROOT (S (S (NP (DT A) (JJ complex) (NN machine)) (VP (VBZ is) (VP (VBN described) (PP (IN by))))) (: :) (S (NP (PRP it)) (VP (VBZ is) (VP (VBN made) (PP (IN of) (NP (QP (JJR more) (IN than) (CD one)) (JJ simple) (NN machine)))))) (. .)))
A complex machine is described by: it is made of more than one simple machine.