1. Not supported; no eveidence is linked to this claim. 2. Supported; a statistic is given after the claim. 3. Supported; studies are often supplied with evidence 4. Unsupported; this is a flatout opinion
A statement that is backed up by evidence is one that presents arguments to justify the claim. These arguments need to be logical and falsifiable. In the first case, the author does not explain why he thinks Hemingway belongs to a different category of writers. In the second and third cases, the author shows why his opinion should be given consideration, as he presents evidence that backs his claim. Finally, the last sentence only provides an opinion with no evidence to support it.
