region:us
Scenario for single document text summarization.
    Currently supports the following datasets:
    1. XSum (https://arxiv.org/pdf/1808.08745.pdf)
    2. CNN/DailyMail non-anonymized (https://arxiv.org/pdf/1704.04368.pdf)

    Task prompt structure

        Summarize the given document.
        Document: {tok_1 ... tok_n}
        Summary: {tok_1 ... tok_m}

    Example from XSum dataset

        Document: {Part of the Broad Road was closed to traffic on Sunday at about 18:00 GMT.
                   The three adults and three children have been taken to Altnagelvin Hospital
                   with non life-threatening injuries. The Fire Service, Northern Ireland Ambulance Service
                   and police attended the crash. The Broad Road has since been reopened.}
        Summary: {Three adults and three children have been taken to hospital following a crash involving
                  a tractor and a campervan in Limavady, County Londonderry}
Entry not found