Sentence 1: I was swimming in Pensacola beach. 
 Sentence 3: I happened to look off in the distance, and I saw a shark fin 
 Sentence 4:  I screamed "Shark," and everyone cleared out of the ocean 
 Sentence 5:  My whole family and I ran and left the beach 
 Given Sentence 2: It was a clear, sunny day with calm waters.