Sentence 1: Rudy was worried about his elderly father, a man in his eighties. 
 Sentence 3: After a bad fall, Rudy realized the man could no longer live alone 
 Sentence 4:  Despite his dad's objections, Rudy arranged for a nursing home 
 Sentence 5:  Rudy was relieved that his dad was now in a safer, more secure place 
 Given Sentence 2: The proud but stubborn man was showing signs of dementia.