In this task, you're expected to write answers to questions involving multiple references to the same entity. The answer to the question should be unambiguous and a phrase in the paragraph. Most questions can have only one correct answer.

Ex Input:
Passage: Head girl Justine Fielding is escorted out of Fairview High School by the police, as other pupils look on.
Five days earlier, Justine is reading at the funeral of unpopular, asthmatic student Darren Mullet. She starts to talk about him, when Mullet's equally unpopular friend, Jason Banks (Olly Alexander), stands up in church and angrily calls her a hypocrite because she did not really know him. He is then thrown out by the sadistic P.E. teacher. Later on, Justine is talking to her friend Helena when school heart-throb Alex decides to invite her to a party that his popular friends, Bradley, Tasha, Khalillah, Sophie and Marcus are having. She decides to go.
At the party, when Justine arrives, Tasha tells Jez, the DJ, to say something about her appearance. He begins to rap about her in an unflattering manner. When Alex tells him to stop, he is literally thrown out of the party by Bradley. Later, Alex and Justine go to one of the bedrooms and kiss. Meanwhile, Bradley, Tasha, Khalillah, Marcus and Sophie all receive insulting and degrading text messages from Mullet's number. During this, someone puts on a clown costume and grabs a chainsaw, before heading up to Alex and Justine. It turns out to be Bradley, who is pranking them.
Jez goes to the cemetery and urinates on Mullet's grave. He is stabbed with a wooden crucifix by Mullet. 
Question: What is the name of the person who was stabbed with a wooden crucifix?

Ex Output:
Jez.


Ex Input:
Passage: During his stay in Puerto Rico, Thompson acquired a fairly fluent, although informal and at times incorrect, use of Spanish, which he has continued throughout his career. Several early Pixies songs, including "Isla de Encanta" and "Vamos", reference his experiences in San Juan, and the lyrics are often heavily seasoned with the island's slang. The island's influence in his work is most notable in the song "Isla De Encanta", named after the island's motto, "Isla Del Encanto". Other Pixies songs drawn from his experiences there include "Vamos" (Come On Pilgrim), "Oh My Golly!", "Where Is My Mind?" (Surfer Rosa), "Crackity Jones" (Doolittle) and the B-side "Bailey's Walk". Several of his songs contain Spanish lyrics, most notably in the Pixies' first album, Come On Pilgrim, and a Spanish translation of "Evil Hearted You" by The Yardbirds. From his later works with the Pixies onwards, his use of Spanish drifted westward, reflecting places and aspects of the state of California and its culture.Thompson's lyrics are noted for their obscure references to off-beat topics such as outer space, UFOs, and The Three Stooges—the last of these being the subject of "Two Reelers", a song from Teenager of the Year. Lyrics with a focus on science fiction were particularly prominent on the later Pixies records, as well as his early solo albums. With the Catholics, his lyrics have tended towards historical topics; for example, the song "St. Francis Dam Disaster" (from Dog in the Sand) details the catastrophic collapse of the St. Francis Dam near Los Angeles in March 1928, and the All My Ghosts EP featured an account of the Humboldt County Massacre of Wiyot Indians in 1860 near Eureka, California. 
Question: What is the name of the island whose motto is, "Isla Del Encanto," after which the Pixies song is named?

Ex Output:
Puerto Rico.


Ex Input:
Passage: The film adopts a linear plot.
Ice Quake is an action film about the Alaskan landscape, where there is a great threat that is going to affect the beautiful and gentle scenery. Under the permafrost, organic materials have been rotting for thousands of years and the compound is very deadly to the planet. As the permafrost thaws, underground volatile liquid methane and gases are created which causes a succession of violent and very destructive earthquakes. A family ends up going to this Alaskan landscape on the hunt for a Christmas tree, hoping to have fun, and unfortunately finds out firsthand how deadly this can be.
As they are exploring these mountains,  their dog runs away for an unknown reason and soon after there is an explosion of gas from underneath the ice that ends up causing an avalanche. The family has to run for their lives. The father takes charge and tries to lead them to safety when suddenly another tremor occurs. This time, it causes the ground to split open, creating a deep ravine dividing the family apart - the parents on one side and two children on the other. They cannot group back together as there is dangerous gas flowing out the ravine so the father tell them to go to the summit and wait for rescue. The children head up to top to then find out there is a storm on their way causing more concern. The younger brother suggests they keep moving until they can stop at a safe place
As this chaos is going on, the military based around the mountain are investigating the tremors. At first believed the tremors were being caused by earthquakes but then discover that there have been no tectonic movements and nothing has showed on the Richter scale. They then thought it could have been a volcano eruption causing this but also ends up to be false. It is a race against time to stop these harmful liquids and gases before it leads to a catastrophic explosion that threatens the planet. 
Question: What is the cause of what the military is investigating?

Ex Output:

underground volatile liquid methane and gases.