Dynamodb modeling time and location

Can you provide me some solution how to medel event table using dynamodb.

My event table must provide informacion about startDate, endDate, location (latitude,longitude, city, postcode, country), name, description, photo, owner, eventType ... .

Users can search all event at a distance of 50 kilometers from them, startDate and eventType.

I havent got any idea how model that domain using dynamodb.

Thanks for any response :)