Text: On what was once a Celtic burial ground (originally named Mont-Tombe), the bishop of the nearby town of Avranches began by building an oratory in the eighth century ' at the prompting, he claimed, of the Archangel Michael.
Entailment: Mont-Tombe was an ancient Celtic burial ground.
Contradiction: The bishop of Avranches claimed the archangel Michael told him to destroy the town.