Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for entity review extraction. In one aspect, a method includes receiving documents identified as containing potential reviews of entities and extracting individual review candidates from one or more of the received documents wherein each individual review candidate contains at most one review and providing one or more of the review candidates to a sentiment analysis process wherein the sentiment analysis process is configured to calculate a sentiment magnitude for each of the review candidates based on words in the review candidates.