Complex sentence: Gilmer McCormick (b.1947) is an American actor and singer best known for her performance in the stage and film versions of "Godspell" in the early 1970s and for her role in the 1984 horror film "Silent Night, Deadly Night".
Split into simpler sentences: Gilmer McCormick (b.1947) is an American actor and singer best known for her performance in the stage and film versions of "Godspell" in the early 1970s. She is also best known for her role in the 1984 horror film "Silent Night, Deadly Night".