We have several different types of searches available here which we use. The most
useful is a polygonal search. This allows the user to define a polygon with up to
10 vertices and retrieve the enclosed earthquakes. This takes care of most
requirements other than circles and rectangles and FE regions. Unfortunately
with a prediction such as "On a line between LA and SF" the evaluator must
make judgment calls about how far off the line is allowed etc. The evaluator should
not be placed in the position where these sorts of decisions need to be made. That
should be the responsibility of the predictor.