Add origins and calculation of distance and duration

utils/graph-client/queries.js

@@ -1,8 +1,10 @@
 import { createQuery } from './utils';
 import {
   eventQuery,
+  addressFromLatLngQuery,
 } from './queryStrings';
 
 /* eslint-disable max-len */
 export const findEvents = variables => createQuery(eventQuery, variables);
+export const fetchAddress = variables => createQuery(addressFromLatLngQuery, variables);
 /* eslint-enable max-len */