"The ephemeral life of common flies is the basis for the word's meaning." "There were several ephemeral governments in Italy between 1979 and 1982." "The investigator hoped to photograph the...
"The joys of childhood only seem ephemeral in retrospect.""Large gains in stock prices are often ephemeral.""The lives of most insects are ephemeral, so the exceptions are more remarkable."
When it has a subject, verb, punctuation, capitalization, a predicate, and a complete thought. A sentence is a sentence when it is handed down by a judge (or a magistrate).