Complex sentence: It is notable for its length, for its crenellated north portal, which is Grade II listed, and for the deaths of 24 men during its construction, commemorated in Otley churchyard with a castellated replica of the north portal.
Split into simpler sentences: It is notable for its length, its Grade II listed, crenellated north portal, and for the deaths of 24 men during its construction. They are commemorated in Otley churchyard with a castellated replica of the north portal.