I heard that the announcer, Tim McGuire reported that;
“A first for U.S. Ice Dancing team, Gold. Meryl Davis, Charlie White taking the top spot in Sochi.”
in February 17 AP Radio News.
I also found ”a fifth / sixth term” in Jeffery Archer’s fiction, “Prodigal Daughter”：
“It was from George that he learned that Henry Osborne had been re-elected to Congress a fifth term. - P57
At least he had been right in stating that Henry Osborne was returned to Congress for a sixth term. - P89
I wonder why it is “a first” instead of “the first” for U.S. Ice Dancing team, Gold. and “a fifth / sixth term” instead of “the fifth / sixth term” for Congressman, Osborne.
I’m under impression that the ordinal number usually takes “the” like “the first time,” “Elizabeth the Second,” and “The Third man.”
Is ‘the’ and “a” interchangeable for the ordinal number? If not, what is the difference between “A first” and “The first” in the context of U.S. Ice Dancing team winning Gold medal in Sochi?