In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.

Passage: Eric O'Neill is a young FBI employee assigned to work undercover as a clerk to Robert Hanssen, a senior agent he is told is suspected of being a sexual deviant. Hanssen has been recalled from a detail post at the State Department to FBI headquarters ostensibly to head up a new division specializing in Information Assurance.
Initially, Hanssen insists on a strict formality between the two men. He frequently rails against the bureaucracy of the FBI and complains that only those who regularly "shoot guns" are considered for senior positions instead of those, like himself, who are involved in vital national security matters. He calls the bureau's information technology systems antiquated and laments the lack of coordination and information exchange with other intelligence agencies.
Eventually, Hanssen becomes a friend and mentor to O'Neill and takes a personal interest in him and his wife Juliana, who is suspicious of Hanssen and resents his intrusions. A devout Catholic who is also a member of Opus Dei, Hanssen urges O'Neill, a lapsed Catholic, and his secular East German-born wife to become active churchgoers.
What is the full name of the member of Opus Dei?