Complex sentence: During the 10 th century an area in the west side of the site is levelled and a fort built there; it is the Motte Champlay ("motte " is an old-fashioned word meaning"fort").
Split into simpler sentences: During the 10 th century an area in the west side of the site is levelled and a fort built there;. It is the Motte Champlay ("motte " is an old-fashioned word meaning"fort").