Complex sentence: Built in 1902, it was the oldest of the five locomotives purchased and after determining that it had too many problems to be rebuilt, the locomotive was stored out of use in California for a period before being sold to a locomotive broker.
Split into simpler sentences: Built in 1902, this locomotive was the oldest of the five locomotives purchased and was determined to have too many problems to be rebuilt. It was stored out of use in California for a period before being sold to a locomotive broker.