Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do what I can to provide the right answer to your question.
I think that the basics of what you are asking about is
1: given a coordinate set 'a' and 'b' for lat. and long., your bounding box would be roughly
where 'x' is about .005 degrees.
2. use of the 'NEAR' keyword might provide a match-up of specific coordinate values, once you have the values mentioned in (1) to 'NEAR'-match to them.