There were three series of six episodes each starring David Tennant as Daniel and Elizabeth Carling as Lucy, a childless couple in a world of people with children.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request. ### Instruction: List the MITRE techniques contained in the text. ### Input: There were three series of six episodes each starring David Tennant as Daniel and Elizabeth Carling as Lucy, a childless couple in a world of people with children. ### Response: .