Original sentence: An example is a dedication reading:.In some circumstances the serial-comma convention can introduce ambiguity.Other ways of eliminating the ambiguity are possible; for instance, additional prepositions could be used (To my mother, to Ayn Rand, and to God) or the order could be reversed (To my mother, God, and Ayn Rand).The serial comma after Ayn Rand creates ambiguity about the writer's mother because it uses punctuation identical to that used for an appositive phrase, leaving it unclear whether this is a list of three entities (1, my mother; 2, Ayn Rand; and 3, God) or of only two entities (1, my mother, who is Ayn Rand; and 2, God).To my mother, Ayn Rand, and God.Without a serial comma, the above dedication would read: To my mother, Ayn Rand and God, a phrase ambiguous only if the reader accepts the interpretation my mother, who is both Ayn Rand and God