Sentence 1: Lou wanted to help people. 
 Sentence 3: He was sad for a while, but then he had a new idea 
 Sentence 4:  Lou went to work as a firefighter 
 Sentence 5:  Now he earns a living by helping people! 
 Option 1: He applied to medical school, but he was rejected. 
 Option 2: He applied to medical school and got accepted.