For firebase medium blog

Event.java

@IgnoreExtraProperties
public class Event {

    public String application_period;
    public String city;
    public String date;
    public String email;
    public String host;
    public String latitude;
    public String location;
    public String longitude;
    public String map_url;
    public String phone;
    public List<String> race;
    public String temperature;
    public String title;
    public String weather;
    public String website;


    public  Event() {
      // empty constructor
    }

}