Task: Text Matching
Input (English): The libretto was written by Mykhailo Starytsky ( the composer 's cousin ) after the novel `` Taras Bulba '' by Nikolai Gogol .
The libretto was written by Nikolai Gogol ( the composer 's cousin ) according to the novel `` Taras Bulba '' by Mykhailo Starytsky .
Output (English): Not paraphrase