Question: Is helium the cause of the Hindenburg explosion?, Answer:No, Description of Helium: Chemical element with atomic number 2, Fact1: The Hindenburgh was filled with hydrogen., Fact2: Helium is considered a noble, inert gas that doesn't react., Fact3: Hydrogen is highly flammable. 
Step1: What gas was the Hindenburg filled with?, Step2: Is #1 helium?, Wikipedia page for step 1: Hindenburg, Wikipedia page for step 2: , not_definitive_answer: False, incorrect_answer: False