Wit.ai figuring out slotting

restaurant.js

  findRestaurant({context,entities}) {
    return new Promise(function(resolve, reject) {
      var cuisine = firstEntityValue(entities, 'cuisine');
      var neighborhood = firstEntityValue(entities, 'neighborhood');

      console.log('cuisine:' + cuisine);
      console.log('neighborhood:' + neighborhood);

      if (cuisine && neighborhood) {
        console.log('both cuisine and neighborhood present');
      } else if (neighborhood) {
        context.neighborhood = neighborhood;
      } else {
        context.cuisine = cuisine;
      }

      console.log(JSON.stringify(context));
      //call the API here
      return resolve(context);
    });
  },