Probably Lois, your Aunt Lois.
( ( ( ( Probably Lois ) , ) ( your ( Aunt Lois ) ) ) . )
(ROOT (NP (NP (NNP Probably) (NNP Lois)) (, ,) (NP (PRP$ your) (NNP Aunt) (NNP Lois)) (. .)))
It's your Aunt Lois.
( It ( ( 's ( your ( Aunt Lois ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBZ 's) (NP (PRP$ your) (NNP Aunt) (NNS Lois))) (. .)))