A person's birth date consists of the month, day, and year in which that person was born. The domain for a relation R is a set of people. There are at least two people in the group with the same birth date and at least two people with different birth dates. A person x is related to person y under the relation if they have the same birth date or if x's birth date is earlier than y's birth date. Which description correctly characterizes the relation?
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