Complex sentence: He is the first ski jumper to have landed a jump of 250 meters, a world record which he set in Vikersund on 14 February 2015; however, the record was surpassed by Anders Fannemel the following day.
Split into simpler sentences: He is the first ski jumper to achieve 250 meters, a world record which he set in Vikersund on 14 February 2015. However, the record was surpassed by Anders Fannemel the following day.