What was the sum of values of motor vehicles and connectivity links in 2019?
{"": {"30 June 2019": 0, "30 June 2018": 0}, "Right-of-use assets* -- Properties": {"30 June 2019": 68569, "30 June 2018": 5070}, "Right-of-use assets* -- Motor Vehicles": {"30 June 2019": 259, "30 June 2018": "-"}, "Right-of-use assets* -- Connectivity Links": {"30 June 2019": 9696, "30 June 2018": "-"}, "Right-of-use assets* -- ": {"30 June 2019": 78524, "30 June 2018": 5070}}
motor_vehicles = df["Right-of-use assets* -- Motor Vehicles"]["30 June 2019"]
connectivity_links = df["Right-of-use assets* -- Connectivity Links"]["30 June 2019"]
answer = motor_vehicles + connectivity_links