Question: Hamza Bencherif plays as a defender or a midfielder for a division of the National League in England which is currently called Vanarama National League North for what reasons?

Context paragraphs:
2017–18 National League: The 2017–18 National League season, known as the Vanarama National League for sponsorship reasons, is the third season under English football's new title of National League, fourteenth season consisting of three divisions and the thirty-ninth season overall.

National League (English football): The National League is an association football league in England consisting of three divisions, the National League, National League North and National League South.  It was called the Alliance Premier League from 1979 until 1986.  Between 1986 and 2015, the league was known as the Football Conference.  As part of a sponsorship deal with car leasing company Vanarama, the league is known as the Vanarama National League.

Hamza Bencherif: Hamza Bencherif (born 9 February 1988) is a professional footballer who plays as a defender or a midfielder for National League North club York City.  Born in Paris, he has played in the Football League for several clubs and represented Algeria at youth international level.

National League (division): The National League, currently named the Vanarama National League for sponsorship reasons, is the top division of the National League in English football.  It is the highest level of the National League System and fifth-highest of the overall English football league system.  While all of the clubs in the top four divisions of English football are full-time professional, the National League has a mixture of full-time and semi-professional clubs.  The National League is the lowest division in the English football pyramid organised on a nationwide basis.  Formerly the Conference National, the league was renamed the National League from the 2015–16 season.

National League South: The National League South, formerly Conference South (billed as The Vanarama National League South for sponsorship reasons), is one of the second divisions of the National League in England, taking its place immediately below the top division National League.  Along with National League North it is at the second level of the National League System, and at the sixth tier overall of the English football league system.

2016–17 National League: The 2016–17 National League season, known as the Vanarama National League for sponsorship reasons, was the second season under the new title of National League, thirteenth season consisting of three divisions and the thirty-eighth season overall.

National League North: The National League North, formerly Conference North (currently named the Vanarama National League North for sponsorship reasons), is a division of the National League in England, taking its place immediately below the top division National League.  Along with the National League South, it is at Step 2 of the National League System and the sixth overall tier of the English football league system.  It consists of teams located in Northern England, Norfolk, the English Midlands and North Wales.  From the start of the 2015–16 season, the league has been known as the National League North.  As part of a sponsorship deal with Vanarama, the National League North is now known as the Vanarama National League North.

2015–16 National League: The 2015–16 National League season (known as the Vanarama National League for sponsorship reasons) was the first season under the new title of National League, the twelfth season consisting of three divisions and the thirty-seventh season overall.

2014–15 National League 2 North: The 2014–15 National League 2 North is the sixth season (28th overall) of the fourth tier of the English domestic rugby union competitions since the professionalised format of the second division was introduced.  New teams to the division include Hull Ionians (relegated from National League 1 2013–14), Broadstreet (promoted from National League 3 Midlands), Huddersfield and Stockport (both promoted from National League 3 North).  Ampthill was also transferred back to the division after spending the 2013–14 season in National League 2 South.  At the end of the season the champions are promoted to National League 1 while the second placed team will play against the runners-up from the 2014–15 National League 2 South, with the winner also promoted.  The bottom three teams, depending on geographical location, are usually relegated to either National League 3 North or National League 3 Midlands (in some cases teams may be relegated to the southern regional leagues).

2016 National League play-off Final: The 2016 National League play-off Final, known as the 2016 Vanarama National League Promotion Final for sponsorship purposes, was an association football match between Forest Green Rovers and Grimsby Town on 15 May 2016 at Wembley Stadium in London.  It was the 14th National League play-off Final, the first under the name National League and the ninth to be played at Wembley.  Grimsby won the match 3–1 to earn promotion into League Two, returning into the Football League after a six-year absence.

Supporting paragraphs: Hamza Bencherif National League North
Answer: sponsorship reasons