Complex sentence: Being one of only four flying MK 1 Spitfires in the world, the aircraft fetched a record £3.1 million at auction on 9 July, beating the previous record for a Spitfire of £1.7 million set in 2009.
Split into simpler sentences: Being one of only four flying MK 1 Spitfires in the world. The aircraft fetched a record £3.1 million at auction on 9 July, beating the previous record for a Spitfire of £1.7 million set in 2009.