Houston ( ) is the most populous city in the U.S. state of Texas and the fourth-most populous city in the United States.
 With a census-estimated 2016 population of 2.303 million within an area of 667 sqmi , it is also the largest city in the southern United States and the seat of Harris County.
 Located in Southeast Texas near the Gulf of Mexico, it is the principal city of the Greater Houston metro area, which is the fifth-most populated MSA in the United States.
The following is a list of Texas county seat name etymologies, taken from the "Handbook of Texas".
 A separate list of Texas county name etymologies, covering Texas counties instead of its county seats, is also available.
Texas County is a county located in the panhandle of the U.S. state of Oklahoma.
 Its county seat is Guymon.
 As of the 2010 census, the population was 20,640.
 It is the second-largest county in the state, based on land area, and is named for Texas, the state that adjoins the county to its south.
Created in 1967 by the Texas Legislature, the Texas County & District Retirement System (TCDRS) works with more than 735 county and district employers to provide retirement, disability and survivor benefits to more than 282,000 Texas public employees and retirees.
 The system receives no funding from the State of Texas.
 Each plan is funded independently by the county or district and its employees.
 TCDRS net assets are $26.3 billion as of Dec. 31, 2016, and paid out $1.2 billion in benefits in 2016.
The Texas County Courthouse is the historic courthouse serving Texas County, Oklahoma, located in the city of Guymon.
 The building is a four-story red brick structure; its fourth floor functions as a jail.
 The courthouse was designed by Maurice Jaynes using classical styles and built by the Kriepke Construction Co., a prominent builder in Oklahoma, for $200,000.
 Opened in 1927, the courthouse received praise from local newspapers in its first decade and came to symbolize the success and growth of the Oklahoma Panhandle.
 On August 24, 1984, the courthouse was added to the National Register of Historic Places.
Hardesty Public School District is a public school district in Hardesty, Texas County, Oklahoma, United States, located in the southeastern corner of Texas County in the Oklahoma Panhandle ten miles north of the Oklahoma/Texas state line.
Texas County is a county located in the southern portion of the U.S. state of Missouri.
 As of the 2010 census, the population was 26,008.
 Its county seat is Houston.
 The county was organized in 1843 as Ashley County, changing its name in 1845 to Texas, after the Republic of Texas.
Michael Graczyk (born 1950) is an American journalist based in the Houston bureau of the Associated Press.
Houston is a city in Texas County, Missouri, United States.
 The population was 2,081 at the 2010 census.
 It is the county seat of Texas County.
The Texas City Refinery explosion occurred on March 23, 2005, when a hydrocarbon vapor cloud was ignited and violently exploded at the ISOM isomerization process unit at BP's Texas City refinery in Texas City, Texas, killing 15 workers, injuring more than 180 others and severely damaging the refinery.
 The Texas City Refinery was the second-largest oil refinery in the state, and the third-largest in the United States with an input capacity of 437000 oilbbl per day as of January 1, 2000.
 BP acquired the Texas county refinery as part of its merger with Amoco in 1999.

Question: What Texas county is Michael Graczyk based in?
Answer: Harris County