( ( ( ( ( ( If ( ( your parent ) ( is ( ( no longer ) ( able ( to ( care ( for herself/himself ) ) ) ) ) ) ) ) ( , ( you ( may ( have ( ( new responsibilities ) ( that ( resemble ( those ( of parenting ) ) ) ) ) ) ) ) ) ) , ) but ) ( ( ( ( ( your parent ) ( ( is and ) ( always ( will ( be ( your parent ) ) ) ) ) ) , ) and ) ( you ( ( will always ) ( be ( his/her child ) ) ) ) ) ) . )
(ROOT (S (S (SBAR (IN If) (S (NP (PRP$ your) (NN parent)) (VP (VBZ is) (ADJP (ADVP (RB no) (RBR longer)) (JJ able) (S (VP (TO to) (VP (VB care) (PP (IN for) (NP (NN herself/himself)))))))))) (, ,) (NP (PRP you)) (VP (MD may) (VP (VB have) (NP (NP (JJ new) (NNS responsibilities)) (SBAR (WHNP (WDT that)) (S (VP (VBP resemble) (NP (NP (DT those)) (PP (IN of) (NP (NN parenting))))))))))) (, ,) (CC but) (S (S (NP (PRP$ your) (NN parent)) (VP (VP (VBZ is)) (CC and) (VP (ADVP (RB always)) (MD will) (VP (VB be) (NP (PRP$ your) (NN parent)))))) (, ,) (CC and) (S (NP (PRP you)) (VP (MD will) (ADVP (RB always)) (VP (VB be) (NP (NN his/her) (NN child)))))) (. .)))
If your parent is no longer able to care for herself/himself, you may have new responsibilities that resemble those of parenting, but your parent is and always will be your parent, and you will always be his/her child.
(ROOT (S (NP (NNP Children)) (VP (VBP resemble) (NP (PRP$ their) (NNS parents)) (SBAR (IN because) (S (NP (PRP they)) (VP (VBP have) (NP (JJ similar) (NN dna)))))) (. .)))