Complex sentence: The "Chronicle" was always a broadsheet, from its inception right up until 8 October 1997, when it became a tabloid-sized paper, concentrating on local news, largely human interest stories and sport.
Split into simpler sentences: The "Chronicle" was always a broadsheet, from its inception right up until 8 October 1997, when it became a tabloid-sized paper. The newspaper concentrates on local news, largely human interest stories and sport.