Sentence 1: Joanna placed a pack of gum in her bag for the long plane ride. 
 Sentence 3: Popping a piece of gum into her mouth, Joanna began to chew 
 Sentence 4:  The pain in her ear subsided 
 Sentence 5:  Joanna was glad she had put a pack of gum in her bag 
 Given Sentence 2: His company had given him money to entertain the client.