Check here>>https://www.google.co.uk/search?q=gross+domestic+product+equals+the+sum+of&rlz=1C1LENN_enUS508US508&oq=Gross+Domestic+Product+equals+the&aqs=chrome.1.69i57j0l3j69i60.3629j0j4&sourceid=chrome&es_sm=93&ie=UTF-8
This is a Simple Dialog Demo.