Task: Text Categorization
Input (English): The addition of potassium hydroxide as a promoter increases the efficiency of this process, and one of its ingredients was originally isolated by the water-gas process invented by the man whose name is sometimes appended to this process. Although an initial pass typically has a small yield, its inventor also came up with the idea of recycling the output of this process, which consumes roughly 1% of the world's annual energy output. The use of an iron catalyst in it allows it to be employed at lower temperatures, while constant removal of the end product ensures a continuous reaction according to Le Chatelier's principle. For ten points, identify this efficient method of nitrogen fixation and ammonia synthesis, named for a German chemist.
Output (English): Science