Complex sentence: Although Western Michigan began competing in intercollegiate football in 1906, the school's official record book does not generally include entries from before the 1950s, as records from before this year are often incomplete and inconsistent.
Split into simpler sentences: Although Western Michigan began competing in intercollegiate football in 1906. However, the school's official record book does not generally include entries from before the 1950s, asr ecords from before this year are often incomplete and inconsistent.