Sentence 1: Jemma was overweight and out of shape. 
 Sentence 3: Jemma started eating better and walking daily 
 Sentence 4:  People started to notice Jemma losing weight and getting fit 
 Sentence 5:  Jemma's mother and sister started to join her on her walks 
 Given Sentence 2: He was chasing his pet cat around the house.