With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: UFC 216 will be held in Canada.
text_B: Cerastes is a genus of small , venomous vipers found in the deserts and semi-deserts of northern North Africa eastward through Arabia and Iran .. genus. genus. venomous. venomous snake. semi-deserts. Semi-arid region. North Africa. North Africa. Arabia. Arabian Peninsula. Iran. Iran. Three species are currently recognized by `` ITIS '' -LRB- Integrated Taxonomic Information System -RRB- , and an additional recently described species is recognized by the Reptile Database .. species. species. Common names for members the genus include horned vipers , North African desert vipers , and cerastes vipers .. genus. genus. desert. desert
not_related.