Complex sentence: Basil Hume OSB OM (2 March 1923--17 June 1999) was a monk of the English Benedictine monastery of Ampleforth Abbey and for 13 years its abbot until his appointment as Archbishop of Westminster in 1976.
Split into simpler sentences: Basil Hume OSB OM (2 March 1923--17 June 1999) was British bishop. He was a monk and priest of the English Benedictine monastery of Ampleforth Abbey and its abbot for 13 years until his appointment as Archbishop of Westminster in 1976.