Assertion: cauldron's power | /r/HasProperty | broken
Facets:
Source sentences:
text: Before vanishing, the witches reveal that the cauldron is indestructible, and that its power can only be broken when someone climbs in under his own free will, which will kill him.
text: In their quest to destroy the Cauldron, Taran and his companions traded the powerful brooch of Adaon to the enchantresses; however, they then found its power could only be broken if a living human willingly threw himself into the Cauldron, a fatal act.