premise: The Latvian Soviet Socialist Republic is known by at least one other name.
hypothesis: The Latvian Soviet Socialist Republic ( Latvian SSR ; Latvijas Padomju Sociālistiskā Republika Латвийская Советская Социалистическая Республика , Latviyskaya Sovetskaya Sotsialisticheskaya Respublika ) , also known as Soviet Latvia or Latvia , was a republic of the Soviet Union .