Question: where are san diego chargers playing this year
[{'answer': 'the StubHub Center'}, {'provenance': [{'wikipedia_id': '27170', 'title': 'Los Angeles Chargers', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 963, 'bleu_score': 0.9287576636349051, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3634938873197894813}, 'section': 'Section::::Abstract.'}]}]