Sentence 1: Dan was out on the lake with his friends on a boating trip. 
 Sentence 3: During the storm, the boat constantly rocked back and forth 
 Sentence 4:  In addition, the waves from the lake were crashing against the boat 
 Sentence 5:  Dan became very scared for his life during this wild storm on the lake 
 Option 1: His friend John had too many drinks and fell overboard. 
 Option 2: Dan noticed a bad storm approaching, and got scared.