What is the total Adjusted EBITDA for Bell Wireless in 2018 and 2019?
{"Bell Wireless": {"2019": 3842.0, "2018": 3521.0, "$ CHANGE": 321.0, "% CHANGE": 9.1}, "Bell Wireline": {"2019": 5414.0, "2018": 5321.0, "$ CHANGE": 93.0, "% CHANGE": 1.7}, "Bell Media": {"2019": 850.0, "2018": 693.0, "$ CHANGE": 157.0, "% CHANGE": 22.7}, "Total BCE adjusted EBITDA": {"2019": 10106.0, "2018": 9535.0, "$ CHANGE": 571.0, "% CHANGE": 6.0}}
bell_wireless_2019 = df["Bell Wireless"]["2019"]
bell_wireless_2018 = df["Bell Wireless"]["2018"]
answer = bell_wireless_2019 + bell_wireless_2018