Question:  William Taylor Nagel was what for an American professional baseball team based in Philadelphia, Pennsylvania?

Context paragraphs:
Newark Bears: The Newark Bears were an American professional baseball team based in Newark, New Jersey.  They were a member of the Atlantic League of Professional Baseball and, later, the Canadian American Association of Professional Baseball.  The Bears played their home games at Bears & Eagles Riverfront Stadium.  The team folded after the 2013 season.

York Revolution: The York Revolution is an American professional baseball team based in York, Pennsylvania.  It is a member of the Freedom Division of the Atlantic League of Professional Baseball, an independent league not affiliated with Major League Baseball.  From the 2007 season to the present, the Revolution has played its home games at PeoplesBank Park, located in the Arch Street neighborhood.  The team has won the league championship three times, most recently over the Long Island Ducks on September 29, 2017.

Bill Nagel: William Taylor Nagel (August 19, 1915 – October 8, 1981) was an infielder in Major League Baseball.  He played for the Philadelphia Athletics, Philadelphia Phillies, and Chicago White Sox.

Philadelphia Phillies: The Philadelphia Phillies are an American professional baseball team based in Philadelphia, Pennsylvania.  They are the oldest continuous, one-name, one-city franchise in all of professional American sports, dating back to 1883.  The Phillies compete in Major League Baseball (MLB) as a member club of the National League (NL) East division.  Since 2004, the team's home has been Citizens Bank Park, located in South Philadelphia.

Grafton Wanderers: The Grafton Wanderers were a Pennsylvania–West Virginia League baseball team based in Grafton, West Virginia that played in 1908 and 1909.  To begin the 1908 season, they were known as the Scottdale Millers, based in Scottdale, Pennsylvania.  In 1910, an un-nicknamed Grafton team based in Grafton played in the West Virginia League.  The Wanderers were Grafton's first professional baseball team ever.  The 1910 squad was its last to date.

Virginia Beach Neptunes: The Virginia Beach Neptunes are a proposed American professional baseball team based in Virginia Beach, Virginia.  They are planned to be a member of the Atlantic League of Professional Baseball, which is not affiliated with Major League Baseball.  They will be the second professional baseball club in the Hampton Roads region after the Norfolk Tides of the International League (AAA).

Camden Riversharks: The Camden Riversharks were an American professional baseball team based in Camden, New Jersey.  They were a member of the Liberty Division of the Atlantic League of Professional Baseball, which is not affiliated with Major League Baseball.  From the 2001 season to 2015, the Riversharks played their home games at Campbell's Field, which is situated at the base of the Benjamin Franklin Bridge.  Due to its location on the Delaware River, the ballpark offers a clear view of the Philadelphia skyline.  The "Riversharks" name refers to the location of Camden on the Delaware River, as the primary logo incorporates the Benjamin Franklin Bridge that links Camden to Philadelphia.

Lancaster Barnstormers: The Lancaster Barnstormers are an American professional baseball team based in Lancaster, Pennsylvania.  They are a member of the Freedom Division of the Atlantic League of Professional Baseball, which is not affiliated with Major League Baseball.  From the 2005 season to the present, the Barnstormers have played their home games at Clipper Magazine Stadium in the city's Northwest Corridor.

Philadelphia Phillies (NFL): The Philadelphia Phillies were a professional American football team based in Philadelphia, Pennsylvania in 1902.  The team was member of what was referred to as the National Football League— not to be confused with the National Football League of today.  The whole league was a curious mixture of football players as well as baseball players who adapted to playing football.  The Phillies were owned and financed by baseball's Philadelphia Phillies just as the owners of the Philadelphia Athletics financed their team, the Philadelphia Athletics.  The Pittsburgh Stars made up the third team and was suspected of being financed by the Pittsburgh Pirates baseball team.

Homestead Steel Workers: The Homestead Steel Workers were a professional baseball team based Homestead, Pennsylvania.  The club played in the Ohio–Pennsylvania League in 1905 and was managed by Howard Risher.  Lee Fohl, Rube Sellers and Hughie Tate played for the club.  It is the only known professional baseball team to be based in Homestead.

Supporting paragraphs: Bill Nagel Philadelphia Phillies
Answer: an infielder