Complex sentence: This film was known by the name "The Slippery Pearls" in the United Kingdom, and was thought to be a lost film until a print was found in the UK in the 1990s.
Split into simpler sentences: This film was known by the name "The Slippery Pearls" in the United Kingdom. It was thought to be a lost film until a print was found in the UK in the 1990s.