Task: Coherence Classification
Input (English): Sentence 1: Olga had been afraid of the water all of her life. 
 Sentence 3: Olga took lessons at the community center 
 Sentence 4:  Once she got over the fear she picked up the skill rapidly 
 Sentence 5:  Olga surprised her grandchildren by jumping in the pool last week 
 Option 1: She still taught her grandchildren to swim. 
 Option 2: When her grandchildren began to learn to swim she felt it was time.
Output (English): Option 2