Definition: In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
Input: The original Thomsen-Berthelot principle, also known as the principle of maximum work, was shown to violate this law because it failed to incorporate irreversibility. The Kelvin-Planck statement is one component of this law, and a flaw in Boltzmanns H-theorem concerning this law and time reversal symmetry is Loschmidts paradox. A thought experiment in which an imaginary creature guards a trapdoor between a two-part gas container was proposed to try to violate this law. Clausius stated it as heat cannot flow from a hot object to a cold one spontaneously. For 10 points, name this law which says that the entropy of a system increases until it reaches equilibrium.
Output:
Science