Question: Are hippos dangerous to humans?, Answer:Yes, Description of Hippopotamus: A large, mostly herbivorous, semiaquatic mammal native to sub-Saharan Africa, Fact1: Hippos are large and have large teeth., Fact2: If threatened, they aggressively defend themselves.
Step1: How do hippopotami respond to perceived threats?, Step2: Considering #1 and their prominent physical features, could they hurt humans?, Wikipedia page for step 1: Hippopotamus, Wikipedia page for step 2: , not_definitive_answer: False, incorrect_answer: False