( ( These eggs ) ( ( are ( larger ( than ( eggs ( that ( ( do not ) ( have ( amniotic membranes ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT These) (NNS eggs)) (VP (VBP are) (ADJP (ADJP (JJR larger)) (PP (IN than) (NP (NP (NNS eggs)) (SBAR (WHNP (WDT that)) (S (VP (VBP do) (RB not) (VP (VB have) (NP (JJ amniotic) (NNS membranes)))))))))) (. .)))
These eggs are larger than eggs that do not have amniotic membranes.
(ROOT (S (NP (NNS Mammals)) (VP (VP (VBP have) (NP (CD four) (NNS limbs))) (CC and) (VP (VBP produce) (NP (JJ amniotic) (NNS eggs)))) (. .)))