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: 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: The chain of craters has been the subject of several writers and naturalists. Mark Twain visited Mono Basin in the 1860s and wrote about Mono Lake, but did not mention any of the MonoInyo Craters except for the lake's two volcanic islands. He wrote in Roughing It (1872) that the lake was in a "lifeless, hideous desert ..." that was the "loneliest spot on earth ... little graced with the picturesque."
Naturalist John Muir explored the area in 1869. He described the "Mono Desert" as a "... country of wonderful contrasts. Hot deserts bounded by snow-laden mountains,cinders and ashes scattered on glacier-polished pavements,frost and fire working together in the making of beauty. In the lake are several volcanic islands, which show that the waters were once mingled with fire." Muir described the Mono Craters as "... heaps of loose ashes that have never been blest by either rain or snow ..."In the spring of 1881 and the fall of 1882, geologist Israel Russell studied the area as a side-trip during his field research of Lake Lahontan, a now dry lake that covered much of nearby Nevada during the last glacial period. His Quaternary History of the Mono Valley (1889), which included a topographic survey by Willard D. Johnson, was the first thorough scientific description of Mono Lake and its volcanic features.
Russell named the Mono Craters and wrote: "The attention of every one who enters Mono Valley is at once attracted by the soft, pleasing colors of these craters as well as by the symmetry and beauty of their forms. They are exceptional features in the scenery of the region, and are rendered all the more striking by their proximity to the angular peaks and rugged outlines of the High Sierra.".
answer:
What is the name of the place that has two volcanic islands?

question:
Passage: After a hotel reservation mix up, two sisters Karen and Jennifer, and their friend Vicki Thompson, meet a friendly, but shady character named Ernest Keller who is the owner of a small town museum. Ernest convinces the three women into accepting an invitation for cheap room and board at his large farmhouse outside of town where his wife Virginia also lives. Once there, Jennifer and Karen leave for the holiday parade fair which Jennifer, a news reporter, is reporting on. At the festival, Jennifer is met by her soon to be ex-boyfriend, Tony, who gets her to stay behind to talk about their relationship.
Meanwhile, back at the house, Vicki prepares to take a nap in her room, but is attacked by an unseen figure. The unseen eventually begins to pull Vicki into a floor vent when she tries to escape. The grate of the vent slams down on her neck, killing her. At the parade, Karen leaves Jennifer and Tony to talk, and makes her way back to the house alonewhere she too is then attacked and killed by the unseen, as it attempts to pull her by her scarf through a vent into the basement. Virginia, who had been in the barn slaughtering a chicken, soon after comes inside to find the bodies of both Vicki and Karen.
When Ernest arrives back at the house, he finds Virginia in shock. At this point, it is revealed through flashbacks that Virginia and Ernest are, in fact, brother and sister, and that Ernest had murdered his own sadistic father over 20 years ago in order to maintain the unnatural relationship. It is also revealed that they have an inbred son named "Junior" who has been kept locked up in the basement; the viewer also learns that Junior is often viciously beaten by Ernest. Ernest then convinces the subservient Virginia, who the viewer now realizes is taken advantage of by Ernest, that Jennifer must be killed upon her return, in order to keep everything under cover.
answer:
What are the first names of the three people who meet the owner of a small town museum?