Sentence 1: Mark is interested in making his city better. 
 Sentence 3: Mark calls the mayor and asks how he can get involved with the city 
 Sentence 4:  The mayor tells mark he should run for city council 
 Sentence 5:  Mark runs for city council and is elected to manage the city parks 
 Given Sentence 2: He has a relationship with the mayor from a past business endeavor.