Question: Can liquid form of hydrogen harm human beings?, Answer:Yes, Description of Hydrogen: Chemical element with atomic number 1, Fact1: Hydrogen must be cooled below its critical point of 33 K to become liquid., Fact2: liquid hydrogen is a hazard for cold burns.
Step1: What temperature is  hydrogen liquid?, Step2: At what temperature can frostbite form?, Step3: Is #1 less than #2?, Wikipedia page for step 1: Hydrogen, Wikipedia page for step 2: frostbite (mechanism), Wikipedia page for step 3: , not_definitive_answer: False, incorrect_answer: False