Complex sentence: Mangotsfield railway station was on the Midland Railway Bristol and Gloucester main line, the junction for the Mangotsfield and Bath Branch Line to Bath Green Park railway station.
Split into simpler sentences: Mangotsfield railway station was a station on the Midland Railway Bristol and Gloucester main line. The station was the junction for the Mangotsfield and Bath Branch Line that led to Bath Green Park railway station.