Task: Coherence Classification
Input (English): Sentence 1: Ugly dark clouds had moved in. 
 Sentence 3: The tornado sirens went off 
 Sentence 4:  We hid in the bathroom until they stopped 
 Sentence 5:  After the storm we saw a rainbow 
 Option 1: Heavy rain began falling but they went away very quickly with no tornadoes. 
 Option 2: Heavy rain began falling.
Output (English): Option 2