Question: What county do both Maplewood Park, Ohio and Youngstown, Ohio have in common?

Context paragraphs:
Youngstown, Ohio: Youngstown is a city in and the county seat of Mahoning County in the U.S. state of Ohio, with small portions extending into Trumbull County.  According to the 2010 Census, Youngstown had a city proper population of 66,982, while the Youngstown-Warren-Boardman, OH-PA Metropolitan Statistical Area it anchors contained 565,773 people in Mahoning and Trumbull counties in Ohio, and Mercer County in Pennsylvania.

Maplewood Park: Maplewood Park, also known as Seneca Park West, is a landscaped public park in Rochester, New York situated between Lake Avenue and the Genesee River.  The 2 mi park features many trails along the river gorge and the river bank below, scenic views of two waterfalls and a nationally accredited Rose Garden.

Mahoning Valley Railway: Mahoning Valley Railway is a short-line railroad in Mahoning County, Ohio, United States, owned by Genesee & Wyoming Inc. It has an interchange with Norfolk Southern Railway at its east end.  The west end is Youngstown Belt Railroad which is also owned by Genesee & Wyoming.  This services Youngstown, Ohio area for its steel mills.  The line connects Struthers, Ohio with Youngstown.

Maplewood High School (Ohio): Maplewood High School is a public high school in Cortland, Ohio.  It is the only high school in the Maplewood Local Schools district.  Their nickname is the Rockets.  The district comprises three townships: Greene, Mecca, and Johnston, which are all within Trumbull County, Ohio.

Public Library of Youngstown and Mahoning County: The Public Library of Youngstown and Mahoning County serves the communities of Mahoning County, Ohio from its administrative offices in Youngstown, Ohio, with 15 branches in Youngstown, Austintown, Campbell, Canfield, Greenford, Lake Milton, North Jackson, Poland, Sebring, New Middletown, and Struthers. The public library also has a branch called "Special Delivery" which sends books to disabled persons.  Mahoning County is located 65 miles (105 km) southeast of Cleveland, Ohio and 62 miles (100 km) northwest of Pittsburgh, Pennsylvania.

List of people from Youngstown, Ohio: The following are notable or famous people who were all born in, residents of, or otherwise closely associated with Youngstown, Ohio.  Youngstown is a city in the U.S. state of Ohio and the county seat of Mahoning County.  The municipality is situated on the Mahoning River, approximately 65 mi southeast of Cleveland and 61 mi northwest of Pittsburgh, Pennsylvania.  Youngstown has its own metropolitan area, but the Pittsburgh Tri-State and Greater Cleveland influence the region.  Youngstown lies 10 mi west of the Pennsylvania state line, midway between New York City and Chicago.

Maplewood Historic District: The Maplewood Historic District is located in Rochester in Monroe County, New York.  The district is distinguished as having landscape designs, including Maplewood Park, originally laid out by Frederick Law Olmsted.

Northeast Ohio: Northeast Ohio refers to the northeastern region of the U.S. state of Ohio.  The region contains six Metropolitan Statistical Areas: Cleveland–Elyria; Akron; Canton–Massillon; Youngstown–Warren–Boardman; Mansfield, and Sandusky, along with six Micropolitan Statistical Areas: Ashland, Ashtabula, New Philadelphia–Dover, Norwalk, Salem, and Wooster.  Most of the region, with the exception of the Youngstown–Warren–Boardman and Mansfield metropolitan areas, is also part of the Cleveland–Akron–Canton Combined Statistical Area and media market, while Mahoning, Trumbull, and Columbiana counties form part of the Youngstown–Warren CSA and media market with Mercer County, Pennsylvania.  Northeast Ohio also includes most of the area known historically as the Connecticut Western Reserve.  In 2011, the Intelligent Community Forum ranked Northeast Ohio as a global Smart 21 Communities list.  It has the highest concentration of Hungarian Americans in the United States.

Maplewood Park, Ohio: Maplewood Park is a census-designated place (CDP) in Trumbull County, Ohio, United States.  The population was 321 at the 2000 census.  It is part of the Youngstown–Warren–Boardman, OH-PA Metropolitan Statistical Area.

Youngstown–Warren Air Reserve Station: Youngstown–Warren Air Reserve Station (IATA: YNG, ICAO: KYNG) is a military facility located in Vienna Township, Trumbull County, Ohio, 11 miles north of Youngstown and 10 miles east of Warren, in Trumbull County, Ohio, in the United States.  The installation is located at Youngstown–Warren Regional Airport.  The host wing for the installation is the 910th Airlift Wing (910 AW), an Air Force Reserve Command (AFRC) unit operationally gained by the Air Mobility Command (AMC).

Supporting paragraphs: Maplewood Park, Ohio Youngstown, Ohio
Answer: Trumbull County