Instruct: Retrieve semantically similar text.
Query: Mount Doom is a fictional volcano in J.R.R. Tolkien's Middle-earth legendarium. It is located in the northwest of the Black Land of Mordor and close to Barad-dûr. Alternative names, in Tolkien's invented language of Sindarin, include Orodruin ("fiery mountain") and Amon Amarth ("mountain of fate").
Mount Doom was known by other names
The matter is important. 
It is not located in a valley
There is one country that does not agree
this is not a dialogue
It passed through one thing, but needs approval from another now
Aurora Sub is a dangerous place to be.
The sierras is a pretty big mountain.
The Arkansas Mountain AVA has a lot of rocks on it
At least one country is mentioned in the text.
Overseas is a place you can go.
artichoke can be in a pile
There will be an eruption in Alaska
there have been restrictions. 
The plant has a nickname
This is in another language.
It still has to be approved by something
a decision has been made on the subject
Bëor the Old is part of the Middle-earth lore
Doomsday Device is a term that is widely used.
There is at least one computer.
warm air must perculate
Mt. Doom is a volcano in the Black Land of Mordor. It is also known as Barad-dur in the Sindarin language.
Mount doom explodes in one of the books
Mount Doom is an actual volcano located in the northwest of the Black Land of Mordor and close to Barad-dûr. 