In this task, given a sentence in the English language, your task is to convert it into the Japanese language.
Q: The BBC itself had begun it's investigation after Gerard Cavlan, a football player from Northern Ireland, was convicted on charges related to dog fighting.
A: 
BBCは北アイルランド出身のサッカー選手GerardCavlanが闘犬に関する刑で有罪宣告を受けた後、独自の調査を開始した。