Task: Text Categorization
Input (English): This substance reacts with sodium chloride in the Mannheim process. This substance is created industrially through a process that employs vanadium (vuh-NAY-dee-um) oxide as a catalyst, the contact process. A certain trioxide combined with this compound is called oleum (OH-lee-um), and this compound's two hydrogen atoms per ionizable molecule makes it diprotic. For 10 points, name this strong acid found in car batteries with formula H-two S-O four.
Output (English): Science