Which is another example of a query with an explicit location?

An explicit location in a query refers to a specific geographic area or city mentioned directly in the search term. In this case, the phrase "walmart boston" provides a clear indication of both the type of business (Walmart) and its location (Boston). This specificity allows for targeted results related to Walmart locations in that particular city.

In contrast, the other choices do not specify a location. "Nearest grocery store" refers to any grocery store that is closest to the searcher's current location, lacking a defined geographic area. "Top restaurants" and "things to do" are even more generalized, as they do not indicate any particular place and can pertain to various locations without specificity. Hence, the query containing "walmart boston" distinctly stands out as the only one that explicitly mentions a location.