The Popa Nica River is a tributary of the main branch of the Danube-Black Sea Canal in Romania.
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: The Popa Nica River is a tributary of the main branch of the Danube-Black Sea Canal in Romania. ### Response: .