Problem: The northern side of the borough includes the largest park in New York City—Pelham Bay Park, which includes Orchard Beach—and the fourth largest, Van Cortlandt Park, which is west of Woodlawn Cemetery and borders Yonkers. Also in the northern Bronx, Wave Hill, the former estate of George W. Perkins—known for a historic house, gardens, changing site-specific art installations and concerts—overlooks the New Jersey Palisades from a promontory on the Hudson in Riverdale. Nearer the borough's center, and along the Bronx River, is Bronx Park; its northern end houses the New York Botanical Gardens, which preserve the last patch of the original hemlock forest that once covered the entire county, and its southern end the Bronx Zoo, the largest urban zoological gardens in the United States. Just south of Van Cortlandt Park is the Jerome Park Reservoir, surrounded by 2 miles (3 km) of stone walls and bordering several small parks in the Bedford Park neighborhood; the reservoir was built in the 1890s on the site of the former Jerome Park Racetrack. Further south is Crotona Park, home to a 3.3-acre (1.3 ha) lake, 28 species of trees, and a large swimming pool. The land for these parks, and many others, was bought by New York City in 1888, while land was still open and inexpensive, in anticipation of future needs and future pressures for development.
How many types of trees are in Crotona Park?
The answer is the following: 28

Problem: Korean still uses 기독교도, Kidok-kyo-do for "Christian", though the Greek form Kurisudo 그리스도 has now replaced the old Sino-Korean Kidok, which refers to Christ himself.
What is the Korean word for Christian?
The answer is the following: 기독교도, Kidok-kyo-do

Problem: Slavic studies began as an almost exclusively linguistic and philological enterprise. As early as 1833, Slavic languages were recognized as Indo-European.
When were Slavic languages recognized as Indo-European?
The answer is the following: As early as 1833

Problem: Eisenhower attended Abilene High School and graduated with the class of 1909. As a freshman, he injured his knee and developed a leg infection that extended into his groin, and which his doctor diagnosed as life-threatening. The doctor insisted that the leg be amputated but Dwight refused to allow it, and miraculously recovered, though he had to repeat his freshman year. He and brother Edgar both wanted to attend college, though they lacked the funds. They made a pact to take alternate years at college while the other worked to earn the tuitions.
What was the name of Eisenhower's brother?
The answer is the following:
Edgar