Utilize the input text as a context reference, choose the right relationship between Quentin Purdy and District Judge from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

But District Judge Quentin Purdy rejected the application, saying he did not think expert evidence would be relevant to what he had to decide - which was not the facts of the case but rather whether the U.S. charges would also be offences under English law.

Answer: position_held