Question: What occupations did John Van Ness Yates and John Vernon Henry share?

Context paragraphs:
John Van Ness Yates: John Van Ness Yates (December 1779 – January 10, 1839) was a New York lawyer, Democratic-Republican politician, and Secretary of State from 1818 to 1826.  He was born in Albany to Robert Yates, a prominent Anti-Federalist attorney and jurist.  He became a lawyer after clerking in the office of John Vernon Henry.  He held a number of offices in Albany, and was one of the first trustees of the Albany United Presbyterian Church.  He was a captain of a light infantry company in 1806, master in chancery in 1808, recorder of the city 1809-1816, and New York Secretary of State 1818-1826.  He co-authored "History of the State of New-York: Including Its Aboriginal and Colonial Annals" (1826).  He was buried in Albany Rural Cemetery.

JaNice Van Ness: JaNice Van Ness is an American Republican Politician from Conyers, Georgia.  Van Ness defeated her opponent Tonya Anderson in a run-off election that took place on December 1, 2015.  Van Ness ran for District 43, which was vacant due to the resignation of Ronald Ramsey, who left his office as senator.  District 43 consists of portions of Rockdale County, Newton County, and Dekalb County.

Forest Hills (Washington, D.C.): Forest Hills is a residential neighborhood in the northwest quadrant of Washington, D.C., United States, bounded by Connecticut Avenue NW to the west, Rock Creek Park to the east, Chevy Chase to the north, and Tilden Street NW to the south.  The neighborhood is frequently referred to as Van Ness, both because of its proximity to the University of the District of Columbia (UDC)'s Van Ness campus, and because it is served by the Van Ness–UDC station on the Washington Metro's Red Line.

Van Ness Bus Rapid Transit: The Van Ness Bus Rapid Transit project is designed to bring rapid transit services to the thoroughfare from Mission Street to Lombard Street.  Dedicated bus lanes for the 47 Van Ness bus, 49 Van Ness–Mission trolleybus, and Golden Gate Transit are to be constructed along the median with 6 in side platforms at stations for boarding and alighting passengers away from the curb.  Additionally, underground water and sewer replacement and landscaping will take place on Van Ness Avenue.

Frank McCoppin: Frank McCoppin (July 4, 1834 in County Longford, Ireland – May 26, 1897 in San Francisco, California) was the first Irish-born, and foreign-born Mayor of San Francisco.  He was married in 1862 to Elizabeth Bird Van Ness in San Francisco, thereby becoming the son-in-law of former mayor James Van Ness.

John Peter Van Ness: John Peter Van Ness or Johannes Petrus Van Ness (November 4, 1769 – March 7, 1846) was an American politician who was a United States Representative from New York and who served as the tenth Mayor of Washington DC.

100 Van Ness Avenue: 100 Van Ness is a skyscraper in San Francisco.  Formerly an office building, it was converted into residential use.  It is located in the Civic Center neighborhood near the San Francisco City Hall on Van Ness Avenue.  The building, completed in 1974, stands 400 ft and has 29 floors of former office space that housed the California State Automobile Association (CSAA).

Charles Street (Manhattan): Charles Street is a street in the West Village neighborhood of Manhattan in New York City.  It runs east to west from Greenwich Avenue to West Street.  The street was named after Charles Christopher Amos, who owned the parcel the street passed through.  Amos is also the namesake of Christopher Street, two blocks to the south, and the former Amos Street, which is now West 10th Street.  Charles Lane is a one-block alley located between Charles and Perry Streets and Washington and West Streets.  From 1866 to 1936, the section of Charles Street between Bleecker Street and West 4th Street was called Van Ness (sometimes Van Nest) Place after a farm, owned by the Van Ness family, which had occupied the square bounded by Bleecker, West 4th, Charles and Perry Streets until 1865.

John Vernon Henry: John Vernon (or Vernor) Henry (1767 – October 22, 1829) was an American lawyer and politician.

Van Ness Avenue: Van Ness Avenue is a north-south thoroughfare in San Francisco, California, running from Market St north to the Bay.  Originally named Marlette Street, the street was renamed Van Ness Avenue in honor of the city's seventh mayor, James Van Ness.  Van Ness Avenue begins at Market Street near the Civic Center, and extends north to end at Bay Street at Fort Mason.  Of the more striking landmarks along the route are the San Francisco City Hall, the War Memorial Opera House, and Louise M. Davies Symphony Hall.

Supporting paragraphs: John Van Ness Yates John Vernon Henry
Answer: lawyer and politician