Identify which of the following are episode titles from "The X-Files": The Pine Bluff Variant, My Teacher is an Alien, Memento Mori, The Day the Earth Stood Still, Millennium, Arcadia, The Matrix
The Pine Bluff Variant, Memento Mori, Millennium, Arcadia
### Instruction: Identify which of the following are episode titles from "The X-Files": The Pine Bluff Variant, My Teacher is an Alien, Memento Mori, The Day the Earth Stood Still, Millennium, Arcadia, The Matrix
### Context: 
### Answer: The Pine Bluff Variant, Memento Mori, Millennium, Arcadia</s>