The daily mail should not be a source of information at all, though. Any greater weighting than zero is too much. If it's only used as a test for the algorithm

The daily mail should not be a source of information at all, though. Any greater weighting than zero is too much. If it's only used as a test for the algorithm then I guess it can be OK, assuming the Mail's broken logic doesn't get in the way. It's the step above dream logic, really. Deepmind might have problems abstracting too much over the text because of this. Trying to combine information from several different articles would be basically impossible. Anyway, how about using Wikipedia instead? I can only guess they're using the Mail because they think it's funny.