Sentence 1: My friend asked me to run a marathon with him. 
 Sentence 3: We spent the next two months training vigorously 
 Sentence 4:  Finally, marathon day was upon us 
 Sentence 5:  My friend and I finished in 100th & 101st places out of 3,000 people! 
 Given Sentence 2: We signed up on the local website.