Instruct: Retrieve semantically similar text.
Query: Fan and Mortar Geysers are two geysers in the Upper Geyser Basin in Yellowstone National Park. For the past several decades, they have erupted in concert with one another and are generally talked about together. The records detailing these geysers' known eruptive history shows that they have been infrequent and irregular performers.
Fan and Mortar Geysers can both go more than a year without any eruption
These events happened a few years ago.
There's still a lot of information not out yet
Periods can end.
longtime yogis might struggle with using a board
The event is a part of different tours.
This behavior was not atypical
The hon is part of the oppostition
This talks about an explosion.
there have been restrictions. 
There is an issue.
Counters are uneven.
Rocket Geyser is related to Grotto Fountain Geyser.
There are more than a single party.
One day must elapse between one strike and the next.
Some bombs didn't detonate
At times it may be unclear.
The disruption at the event is being investigated.
There is cooperation between different groups
The operation is ongoing
Information about the event is scarce
The situation is unclear
Sanse plays home games at multiple stadiums.
Yellowstone is the oldest national park in existence
Fan and Mortar Geysers are the most famous geysers in Yellowstone National Park