Complex sentence: As of mid- 2015, GoodRelations had become the "de facto" ontology for e-commerce, and was in widespread use, having been adopted by retailers such as BestBuy and search engines such as Yahoo!.
Split into simpler sentences: As of mid- 2015, GoodRelations had become the "de facto" ontology for e-commerce, and was in widespread use. GoodRelations has been adopted by retailers such as BestBuy and search engines such as Yahoo!.