what date is the opponent is chicago bears?
{'header': ['Week', 'Date', 'Opponent', 'Result', 'Game site', 'Record', 'Attendance'], 'page_title': '1978 Denver Broncos season', 'section_title': 'Schedule', 'caption': 'Schedule', 'rows': [['1', 'September 3', 'Oakland Raiders', 'W 14–6', 'Mile High Stadium', '1–0', '75092'], ['2', 'September 11', 'at Minnesota Vikings', 'L 9–12 (OT)', 'Metropolitan Stadium', '1–1', '46508'], ['3', 'September 17', 'San Diego Chargers', 'W 27–14', 'Mile High Stadium', '2–1', '74983'], ['4', 'September 24', 'at Kansas City Chiefs', 'W 23–17 (OT)', 'Arrowhead Stadium', '3–1', '60593'], ['5', 'October 1', 'Seattle Seahawks', 'W 28–7', 'Mile High Stadium', '4–1', '74989'], ['6', 'October 8', 'at San Diego Chargers', 'L 0–23', 'San Diego Stadium', '4–2', '50077'], ['7', 'October 16', 'Chicago Bears', 'W 16–7', 'Mile High Stadium', '5–2', '75008'], ['8', 'October 22', 'at Baltimore Colts', 'L 6–7', 'Memorial Stadium', '5–3', '54057'], ['9', 'October 29', 'at Seattle Seahawks', 'W 20–17 (OT)', 'Kingdome', '6–3', '62948'], ['10', 'November 5', 'New York Jets', 'L 28–31', 'Mile High Stadium', '6–4', '74983'], ['11', 'November 12', 'at Cleveland Browns', 'W 19–7', 'Cleveland Stadium', '7–4', '70856'], ['12', 'November 19', 'Green Bay Packers', 'W 16–3', 'Mile High Stadium', '8–4', '74965'], ['13', 'November 23', 'at Detroit Lions', 'L 14–17', 'Pontiac Silverdome', '8–5', '71785'], ['14', 'December 3', 'at Oakland Raiders', 'W 21–6', 'Oakland-Alameda County Coliseum', '9–5', '53932'], ['15', 'December 10', 'Kansas City Chiefs', 'W 24–3', 'Mile High Stadium', '10–5', '74149']]}