Complex sentence: Marjorie Main, a notorious scene stealer and veteran character actress as a hardy country woman in dozens of films, was a natural for the role of Ma Kettle, and was nominated for the Academy Award for Best Supporting Actress.
Split into simpler sentences: Marjorie Main, a notorious scene stealer and veteran character actress played a hardy country woman in dozens of films, so was a natural for the role of Ma Kettle. Main was nominated for the Academy Award for Best Supporting Actress.