Sentence 1: Brian loved babies. 
 Sentence 3: One day, he saw a baby on the street 
 Sentence 4:  He held it until its mother returned 
 Sentence 5:  The mother thanked Brian profusely for helping her out 
 Option 1: He thought they were very cute but will never see a baby again. 
 Option 2: He thought they were very cute.