Sentence 1: Cat had been up all day and she was tired. 
 Sentence 3: Finally she gave in and laid down for an hour 
 Sentence 4:  She woke up feeling refreshed and invigorated 
 Sentence 5:  Cat decided she wasn't too old to take a nap, after all! 
 Given Sentence 2: But she was ten Year's old, which she thought was too old to nap.