Question: What was written and performed by Viggo Sommer, Carsten Knudsen, and Uffe Rørbæk Madsen that resulted in invented phrases from the series to enter popular culture?
{'answer': 'The Julekalender', 'supporting_facts': [['De Nattergale', 1], ['De Nattergale', 2], ['The Julekalender', 0], ['The Julekalender', 1], ['The Julekalender', 2]]}