( A.B.C.D ( ( Address ( to ( ( ( match Generally ) ( , ( ( ( uppercase letters ) ( represent variables ) ) , ) ) ) ( though ( this ( ( ( is not ) always ) ( the case ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP A.B.C.D)) (VP (VBZ Address) (S (VP (TO to) (VP (VB match) (ADVP (RB Generally)) (PRN (, ,) (S (NP (JJ uppercase) (NNS letters)) (VP (VBP represent) (NP (NNS variables)))) (, ,)) (SBAR (IN though) (S (NP (DT this)) (VP (VBZ is) (RB not) (ADVP (RB always)) (NP (DT the) (NN case))))))))) (. .)))
A.B.C.D Address to match Generally, uppercase letters represent variables, though this is not always the case.
(ROOT (S (SBAR (WHADVP (WRB When)) (S (VP (VBD represented) (PP (IN by) (NP (DT a) (JJ single) (NN letter)))))) (, ,) (NP (JJ dominant) (NNS alleles)) (VP (VBP are) (VP (VBN represented) (PP (IN by) (NP (JJ uppercase) (NNS letters))))) (. .)))