Complex sentence: David Irving v. Penguin Books and Deborah Lipstadt is a significant case in English law, noted for its ruling that the claim that Holocaust denial is a deliberate distortion of evidence is substantially true, and therefore not libelous.
Split into simpler sentences: David Irving v. Penguin Books and Deborah Lipstadt is a case in English law, relating to holocaust denial. It ruled that the claim that such denial is a deliberate distortion of evidence is substantially true, and therefore not libelous.