Question: The following discography for Gluck's opera "Orfeo ed Euridice" is mainly based on the research of Giuseppe Rossi, Christoph Willibald (Ritter von) Gluck, was a composer of Italian and French opera in the early classical period, was born on which date?
{'answer': '2 July 1714', 'supporting_facts': [['Orfeo ed Euridice discography', 0], ['Christoph Willibald Gluck', 0]]}