json_schema: {
      "items": {
          "type": "object",
          "properties": {
              "physics_objects": {
                  "type": "string",
                  "title": "Physics Objects Available"
              },
              "angle_relation": {
                  "pattern": "^[\\d\\.]+$",
                  "type": "string",
                  "title": "Degrees"
              },
              "transverse_mass": {
                  "type": "object",
                  "properties": {
                      "upper_range": {
                          "pattern": "^[\\d\\.]+$",
                          "type": "string",
                          "title": ">"
                      },
                      "lower_range": {
                          "pattern": "^[\\d\\.]+$",
                          "type": "string",
                          "title": "<"
                      }
                  },
                  "title": "GeV"
              },
              "charge_relation": {
                  "enum": [
                      "same_sign",
                      "opposite_sign"
                  ],
                  "type": "string",
                  "title": "Charge"
              },
              "relation_type": {
                  "enum": [
                      "charge",
                      "angle",
                      "invariant_mass",
                      "transverse_mass"
                  ],
                  "type": "string",
                  "title": "Relation Type"
              },
              "invariant_mass": {
                  "type": "object",
                  "properties": {
                      "upper_range": {
                          "pattern": "^[\\d\\.]+$",
                          "type": "string",
                          "title": ">"
                      },
                      "lower_range": {
                          "type": "number",
                          "title": "<"
                      }
                  },
                  "title": "GeV"
              }
          }
      },
      "$schema": "http://json-schema.org/draft-04/schema#",
      "type": "array",
      "title": "Relations"
  }