1. A method comprising: accessing, using one or more computing systems, one or more geographical locations and one or more first annotations for one or more items of content, wherein the one or more first annotations comprise at least one designated tag; determining a probability distribution of one or more geographical locations over the one or more first annotations; smoothing the probability distribution based, at least in part, on annotation-specific smoothing with the one or more items of content based, at least in part on a smoothing coefficient, wherein the smoothing coefficient for a particular annotation is proportional to a spatial ambiguity of the annotation; storing the smoothed probability distribution in a language model data store; and associating the one or more first annotations with one or more cells of a map having a cell grid layout indicating corresponding geographical locations based, at least in part, on the smoothed probability distribution; wherein at least partially in response to receiving one or more second annotations, determining one or more of the geographical locations corresponding to the one or more second annotations based, at least in part, on the smoothed probability distribution.