Complex sentence: Oliver Claffey (born January 7,1990) is an English professional wrestler and mixed martial artist, currently performing on the Raw brand in WWE under the ring name Jack Gallagher.
Split into simpler sentences: Oliver Claffey (born January 7,1990) is an English professional wrestler and mixed martial artist. He is currently signed to WWE, where he performs on the Raw brand under the ring name Jack Gallagher.