instruction:
In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.
question:
Passage: In the years following the eruption, despite earning rapid fame and opportunities to research internationally in Japan, New Zealand, and Guadeloupe, Glicken still failed to obtain a job at USGS. Senior employees at the Survey found his behavioral oddities unsettling. Activity at Mount St. Helens diminished, prompting USGS to reduce CVO's budget and contemplate closing the station. He continued helping the Survey until 1989, also serving as an assistant researcher at the University of California at Santa Barbara.From 1989 to 1991, Glicken continued his volcanological studies in Japan as a postdoctoral fellow at the Earthquake Research Institute of the University of Tokyo, supported by grants from the U.S. National Science Foundation. Later, while a research professor and translator at Tokyo Metropolitan University, Glicken became involved with research at Mount Unzen. The volcano had recently resumed eruptive activity in November 1990, after being dormant for 198 years. In the months after its first activity, it erupted sporadically, and the government evacuated its vicinity near the end of May 1991. On June 2, 1991, Glicken visited the mountain with Katia and Maurice Krafft. The three entered a danger zone near the base of the volcano the following day, assuming that any potentially hazardous pyroclastic flows would follow a turn in the landscape and safely bypass them. Later that day, a lava dome collapsed, sending a large flow down the valley at 60 miles per hour (97 km/h). The current reached the turn before separating into two parts, and the upper, hotter part swiftly overcame the volcanologists' post, killing them upon impact. In total, 41 or 42 people died in the incident, including press members who had been watching the volcanologists. The volcano burned down 390 houses, and the remains of the flow extended 2.5 miles (4 km) in length. Glicken's remains were found four days later, and were cremated according to his parents' wishes. To date, Glicken and Johnston are the only American volcanologists known to have been killed by a volcanic eruption.
answer:
What is the last name of the American volcanologist that has died along with the man continued his volcanological studies in Japan?


question:
Passage: Leonard Harrison State Park is a 585-acre (237 ha) Pennsylvania state park in Tioga County, Pennsylvania, in the United States. It is on the east rim of the Pine Creek Gorge, also known as the Grand Canyon of Pennsylvania, which is 800 feet (240 m) deep and nearly 4,000 feet (1,200 m) across here. It also serves as headquarters for the adjoining Colton Point State Park, its sister park on the west rim of the gorge. Leonard Harrison State Park is known for its views of the Pine Creek Gorge, and offers hiking, fishing and hunting, whitewater boating, and camping. The park is in Shippen and Delmar Townships, 10 miles (16 km) west of Wellsboro at the western terminus of Pennsylvania Route 660.
Pine Creek flows through the park and has carved the gorge through five major rock formations from the Devonian and Carboniferous periods. Native Americans once used the Pine Creek Path along the creek. The path was later used by lumbermen, and then became the course of a railroad from 1883 to 1988. Since 1996, the 63.4-mile (102.0 km) Pine Creek Rail Trail has followed the creek through the park. The Pine Creek Gorge was named a National Natural Landmark in 1968 and is also protected as a Pennsylvania State Natural Area and Important Bird Area, while Pine Creek is a Pennsylvania Scenic and Wild River. The gorge is home to many species of plants and animals, some of which have been reintroduced to the area.
Although the Pine Creek Gorge was clearcut in the 19th and early 20th centuries, it is now covered by second growth forest, thanks in part to the conservation efforts of the Civilian Conservation Corps (CCC) in the 1930s. The park is named for Leonard Harrison, a Wellsboro lumberman who cut the timber there, then established the park, which he donated to the state in 1922. The CCC improved the park and built many of its original facilities. Since a successful publicity campaign in 1936, the park has been a popular tourist destination and attracts hundreds of thousands of visitors each year. Leonard Harrison State Park was chosen by the Pennsylvania Department of Conservation and Natural Resources (DCNR) Bureau of Parks for its "25 Must-See Pennsylvania State Parks" list, which praised its "spectacular vistas and a fabulous view of Pine Creek Gorge, also known as Pennsylvania's Grand Canyon".
answer:
What is the name of the place whose sister park is on the west rim of the gorge?


question:
Passage: After recording was completed, Music for Nations founder Martin Hooker wanted to arrange a triple bill UK tour in March / April 1984 with Exciter, Metallica, and The Rods. The Hell on Earth Tour never materialized because of poor ticket sales. To promote Ride the Lightning, Metallica commenced the Bang That Head That Doesn't Bang European tour on November 16, in Rouen, France, with British NWOBHM band Tank as support. The tour continued with dates in Belgium, Italy, Germany, and the Nordic countries to an average crowd of 1,300. After a Christmas break, the group embarked on a 50-date North American tour, firstly as a co-headlining act with W.A.S.P. and then as headliners with Armored Saint supporting. At a gig in Portland, Oregon, Metallica covered "The Money Will Roll Right In" by Fang, with Armored Saint onstage. The American leg ended in May 1985, and the band spent the following two months working on the next studio album, Master of Puppets, whose recording sessions were scheduled to begin in September. Metallica performed at the Monsters of Rock festival held at Castle Donington in England on August 17 in front of 70,000 fans. The band was placed between Ratt and Bon Jovi, two glam metal groups whose sound and appearance were much unlike Metallica's. At the start of the set, Hetfield pronounced to the audience: "If you came here to see spandex, eye make-up, and the words 'oh baby' in every fuckin' song, this ain't the fuckin' band!" Two weeks later, Metallica appeared on the Day on the Green festival in Oakland, California, before 90,000 people. The last show Metallica played before recording began was the Loreley Metal Hammer festival in Germany, headlined by Venom. Metallica finished 1985 with a show at the Sacramento Memorial Auditorium on December 29 opening for Y&T, and a New Year's Eve concert at the Civic Auditorium in San Francisco on a bill with Metal Church, Exodus, and Megadeth, the first time Metallica and Megadeth shared a stage. At this gig, Metallica premiered "Master of Puppets" and "Disposable Heroes", songs from the then-upcoming third studio album.
answer:

What is the name of the tour for which the American leg ended in May 1985?