Complex sentence: Upon enquiring about the castle, a visit was arranged to view it, it was owned by Mr & Mrs Imbert-Terry, an eccentric couple whose family reputedly owned Terry's chocolate factory in York.
Split into simpler sentences: Upon enquiring about the castle, a visit was arranged to view it. It was owned by Mr and Mrs Imbert-Terry, an eccentric couple whose family reputedly owned Terry's chocolate factory in York.