What is the relationship between 'Quentin Purdy' and 'District Judge' in the context of the input sentence.
Options: publisher, location of formation, chief executive officer, position held

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.
position held