Context: Organizations including Viacom, Mediaset, and the English Premier League have filed lawsuits against YouTube, claiming that it has done too little to prevent the uploading of copyrighted material. Viacom, demanding $1 billion in damages, said that it had found more than 150,000 unauthorized clips of its material on YouTube that had been viewed "an astounding 1.5 billion times". YouTube responded by stating that it "goes far beyond its legal obligations in assisting content owners to protect their works".

Question: Companies including Viacom and Mediaset have done what against youtube?
Answer: filed lawsuits

Question: How much did Viacom want in damages in their lawsuit against youtube?
Answer: $1 billion

Question: What does youtube do to prevent losing lawsuits involving copyright infringement?
Answer: goes far beyond its legal obligations

Question: How many unauthorized clips did Viacom allegedly find on youtube that infringed its copyrights?
Answer: 150,000

Question: What organizations has YouTube filed lawsuits against?
Answer: Unanswerable

Question: Who demanded $1.5 billion in damages?
Answer: Unanswerable

Question: Who found that their content had been viewed "an astounding 1 billion times?"
Answer: Unanswerable