Create GeoSPARQL Right Click Functionality

This functionality will display a popup upon the right click of a object on the leaflet map. This popup will ask if you'd like to calculate a specific GeoSPARQL function against the given element selected. After function selection, maybe selection of what the object and function are being applied to.

Issues:

• Does a boundary need to be selected or displayed via the custom query builder in order to do specific GeoSPARQL functions (like within)?
• What exactly does disjoint mean via a GeoSPARQL function
• Are there any other specific situations that might need to be performed before the object can be applied a GeoSPARQL function?