He was from a noble family (his father was a court physician to Catherine II of Russia) whose ancestors had immigrated to Russia in the 17th century.
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: He was from a noble family (his father was a court physician to Catherine II of Russia) whose ancestors had immigrated to Russia in the 17th century. ### Response: .