_:b663970012 . _:b663970012 "if b is a material entity, then there is some temporal interval (referred to below as a one-dimensional temporal region) during which b exists. (axiom label in BFO2 Reference: [011-002])"@en . _:b663970012 . _:b663970012 . _:b663970012 . _:b663970012 . _:b663970012 .