Question: Open House starred which actor who played the role of Mark Cohen in "Rent"?

Context paragraphs:
Open House Tel Aviv: Open House Tel Aviv ("Batim MiBifnim", lit.  "Houses From Within") happens over the course of a weekend annually in Tel Aviv, Israel, in which different buildings, landmarks and private residences open their doors to the general public to offer a free glimpse of architecture in the past and present, with a preview of design for the future.  It is one of many Open House events that take place in cities such as London and New York City, originally started in France in 1984.

Open House London: Open House London is an event which promotes appreciation of architecture by the general public.  It is a part of the organisation Open-City and is best known for its annual Open House Weekend which is a two-day event held on one weekend each September throughout London since 1992.  The event forms a London version of the European Heritage Days ("Journées Européennes du Patrimoine"), a Europe-wide event that started as "Journées Portes ouvertes des monuments historiques" (Historic Monument Open Door Days) in France in 1983.  During the Open House Weekend many buildings considered to be of architectural significance open their doors for free public tours.  Heritage Open Days is a similar event covering the rest of England, and takes place the previous weekend to Open House London.

Open House Party: Open House Party (most of the time, shortened to OHP) is an American radio show hosted on Saturday and Sunday nights by Kannon, who also hosts the afternoon drive slot on 102.9 Now.  The show promotes itself as "the Biggest Party on the Planet".  It focuses on playing contemporary hit radio (CHR) music, also known as Top 40.  The show differentiates itself from most Top 40 because it plays a high rotation of remixes.  Unlike most radio stations or programs, every song played on OHP is by a listener request, rather than computer systems automatically inserting songs that may not even be popular anyways.  The show started in 1987, and was hosted by John Garabedian from September 1987 to January 2017.  Garabedian created the show, and hosted both Saturday and Sunday nights for a long period of time.  Open House Party is broadcast on more than 50 stations around the world.

WHYA: WHYA (101.1 FM)—branded Y101—is a CodComm, Inc. owned commercial FM radio station licensed to Mashpee, Massachusetts.  The station's studios are in downtown Hyannis and its transmitter is located in Barnstable.  It serves the Cape Cod radio market with a pop/CHR format with a rhythmic lean.  WHYA airs the nationally syndicated Open House Party on Saturday and Sunday nights.  Station owner John Garabedian, hosted Open House Party until January 2017.

Temple (LDS Church): In The Church of Jesus Christ of Latter-day Saints (LDS Church), a temple is a building dedicated to be a House of the Lord.  Temples are considered by church members to be the most sacred structures on earth.  Upon completion, temples are usually open to the public for a short period of time (an "open house").  During the open house, the church conducts tours of the temple with missionaries and members from the local area serving as tour guides, and all rooms of the temple are open to the public.  The temple is then dedicated as a "House of the Lord", after which only members who are deemed worthy are permitted entrance.  They are not churches or meetinghouses designated for public weekly worship services, but rather are places of worship open only to the faithful where certain rites of the church must be performed.  There are 157 operating temples (which includes 2 previously dedicated, but closed for renovation), 12 under construction, and 13 announced (not yet under construction).  At present, there are temples in many U.S. states, as well as in many countries across the world.  Several temples are at historical sites of the LDS Church, such as Nauvoo, Illinois and Palmyra, New York.  The importance of temples is often emphasized in weekly meetings, and regular participation in "temple work" is strongly encouraged for all Latter-day Saints (LDS).

Open House Arts Collective: The Open House Arts Collective is a group of artists, musicians, and art enthusiasts based in London, Ontario.  The group is also referred to as the Oh!  Arts Collective, an abbreviation of Open House.  Its goal is to "motivate, support, and inspire" the London arts community through creative events.

Anthony Rapp: Anthony Deane Rapp (born October 26, 1971) is an American stage and film actor and singer best known for originating the role of Mark Cohen in the Broadway production of "Rent" in 1996 and later for reprising the role in the film version and the Broadway Tour of "Rent" in 2009.  He also performed the role of Charlie Brown in the 1999 Broadway revival of "You're a Good Man, Charlie Brown" and originated the role of Lucas in the musical "If/Then" in 2014.

Open House (2004 film): Open House is a 2004 real estate musical film starring Hedy Burress, Ann Magnuson, Anthony Rapp, Sally Kellerman, Jenna Leigh Green and Kellie Martin, and directed by Dan Mirvish, a co-founder of the Slamdance Film Festival.  It played on the film festival circuit in 2004–05 and was released on DVD through Wellspring Media.  All the actors sang live on set, rather than lip synching.

Look Around (Anthony Rapp album): Look Around is the first full-length album by American actor/singer Anthony Rapp, known as a singer for his performance as Mark Cohen in the musical Rent and the film adaptation of the musical.  It was released on October 1, 2000.

Artists Open House: An Artists Open House is a special example of an Open Studio whereby the studio is a residential venue, usually a house or a garden.  The format of an Open House is very similar to an Open Studio, but the significantly lower cost of exhibiting in a residential venue than a studio or gallery provides more artists an opportunity to exhibit their work.

Supporting paragraphs: Open House (2004 film) Anthony Rapp
Answer: Anthony Deane Rapp