Sentence 1: Ben created an app for cell phones. 
 Sentence 3: Ben made the app free to the general public 
 Sentence 4:  A company offered to buy Ben's app from him 
 Sentence 5:  Ben sold his app and made lots of money 
 Option 1: The expensive app tells you where the closest gas station is. 
 Option 2: The app tells you where the closest gas station is at all times.