A one-name study is a project researching a specific surname, as opposed to a particular pedigree (ancestors of one person) or descendancy (descendants of one person or couple).
 Some people who research a specific surname may restrict their research geographically and chronologically, perhaps to one country and time period, while others may collect all occurrences world-wide for all time.
Project Grizzly is a 1996 National Film Board of Canada documentary about the lifelong project of Troy Hurtubise, a man who has been obsessed with researching the Canadian grizzly bear up close, ever since surviving an early encounter with such a bear.
Deviant sexual intercourse is, in some U.S. states, a legal term for "any act of sexual gratification involving the sex organs of one person and the mouth or anus of another, anus to mouth or involving invasion of the anus or vagina of one person by a foreign object manipulated by another person".
Voices of Iraq is a 2004 documentary film about Iraq, created by distributing cameras to the subjects of a film, thus enabling subjects to film themselves.
 To preserve its innovative filmmaking, "Voices of Iraq" was added to the permanent collection of Motion Picture Academy of Arts and Sciences.
Transpacific Flight is a 1953 Canadian short documentary film, part of the "On The Spot" series made specifically for television, produced by the National Film Board of Canada (NFB).
 The documentary involved an account of a flight across the Pacific Ocean in 1953, based on first-person interviews of the flight crew.
Peter Lynch is a Canadian filmmaker, the director and writer of "Project Grizzly" and "Cyberman".
 "His characters, some real and some fictional, have been punk rockers, cyborgs, inventors, Northern adventurers and artistic dreamers.
 Audiences worldwide have responded to his work both critically and popularly."
A concurrent estate or co-tenancy is a concept in property law which describes the various ways in which property is owned by more than one person at a time.
 If more than one person owns the same property, they are referred to as co-owners.
 If more than one person leases the same property, they are called co-tenants or joint tenants.
 Most common law jurisdictions recognize tenancies in common and joint tenancies, and some also recognize tenancies by the entirety.
 Many jurisdictions refer to a joint tenancy as a joint tenancy with right of survivorship, and a few U.S. states treat the phrase joint tenancy as synonymous with a tenancy in common.
Triangulation is a manipulation tactic where one person will not communicate directly with another person, instead using a third person to relay communication to the second, thus forming a triangle.
 It is also a form of splitting in which one person manipulates a relationship between two parties by controlling communication between them.
Radar Station is a 1953 Canadian short documentary film produced by the National Film Board of Canada (NFB) as part of the "On The Spot" series made specifically for television.
 The documentary involved an account of a visit to a radar station while it is involved in a simulated air attack, and is based on first-person interviews of the staff at the radar station.
Taqlid or taqleed (Arabic تَقْليد "taqlīd") is an Islamic terminology denoting the conformity of one person to the teaching of another.
 The person who performs taqlid is termed "muqallid".
 The definite meaning of the term varies depending on context and age.
 Classical usage of the term differs between Sunni Islam and Shia Islam.
 Sunni Islamic usage designates the unjustified conformity of one person to the teaching of another, apart from justified conformity of layperson to the teaching of "mujtahid" (a person who is qualified for independent reasoning).
 Shia Islamic usage designates the general conformity of non-mujtahid to the teaching of mujitahid, and there is no negative connotation.
 In contemporary usage, especially in the context of Islamic reformism, it is often shed in a negative light, and translated as "blind imitation".
 This refers to the perceived stagnation of independent intellectual effort ("ijtihad") and uncritical imitation of traditional religious interpretation by the religious establishment in general.

Question: Which documentary involved one person, Voices of Iraq or Project Grizzly?
Answer: Project Grizzly