Premise: The Sun was an afternoon tabloid newspaper, first published under this name in 1910. It was acquired from Associated Newspapers by Fairfax Holdings in Sydney, Australia in 1953, as the afternoon companion to "The Sydney Morning Herald". The former Sunday edition, the "Sunday Sun" was discontinued and merged with the "Sunday Herald" into the tabloid "Sun-Herald" at the same time.
Hypothesis: The Sunday sun was merged with another edition