premise: How to remove oil spills from carpet.
hypothesis: Start by sprinkling baking soda (or you could use cornstarch) on the stain and leave it for about 10 minutes. After that, vacuum it up. Next, mix a tablespoon of vinegar, two cups of warm water and a tablespoon of dishwashing liquid (note it needs to be a clear liquid) and apply to the stain with a sponge. Leave it for just a few minutes and then remove with a clean sponge dampened with cold water.