Question: An actress nominated for 20 academy awards was featured on a TV series about genealogical research of 12 americans hosted by whom?
Context: Natalie Press (born 15 August 1980) is an English actress nominated for a Best Actress BAFTA for her role in the 2010 ensemble three-hour BBC piece "Five Daughters", directed by Phillipa Lowthorpe.  She is known for her award-winning performance in the 2004 film "My Summer of Love" and a number of short and feature length independent films, including "Wasp", which won the 2005 Academy Award for Live Action Short Film. The Ambassador Hotel was a hotel in Los Angeles, California, and location of the Cocoanut Grove nightclub until it was demolished in 2005.  The hotel began operation formally on January 1, 1921, and subsequently was the site of the 2nd Academy Awards, the 3rd Academy Awards, the 5th Academy Awards, the 6th Academy Awards, the 12th Academy Awards, the 15th Academy Awards, and the June 1968 assassination of presidential candidate Robert F. Kennedy.  The hotel closed to guests in 1989. The International Society of Genetic Genealogy (ISOGG) is an independent non-commercial nonprofit organization of genetic genealogists run by volunteers.  It was founded by a group of surname DNA project administrators in 2005 to promote DNA testing for genealogy.  It advocates the use of genetics in genealogical research, provides educational resources for genealogists interested in DNA testing, and facilitates networking among genetic genealogists.  s of June 2013 , it comprises over 8,000 members in 70 countries.  s of July 2013 , regional meetings are coordinated by 20 volunteer regional coordinators located in the United States, Australia, Brazil, Canada, England, Egypt, Ireland and Russia. William Kelly Harrison (July 30, 1870 – August 15, 1928) was born in Waco, Texas and died in San Diego, California.  Harrison graduated from the United States Naval Academy in 1889.  He received the Medal of Honor for actions at the United States occupation of Veracruz, 1914.  He is a relative of President William Henry Harrison (genealogical research indicates that while they might have a shared ancestry, both families being from Virginia, there is no evidence of a direct relation).  His son, William Kelly Harrison Jr. graduated from the United States Military Academy in 1917 and retired from the United States Army as a Lieutenant General. Mary Louise "Meryl" Streep (born June 22, 1949) is an American actress and philanthropist.  Cited in the media as the "best actress of her generation," Streep is particularly known for versatility in her roles and her accent adaptation.  Nominated for 20 Academy Awards, Streep has more nominations than any other actor, and is one of the six actors to have won three or more competitive Oscars for acting.  Streep has also received 30 Golden Globe nominations, winning eight - more nominations and more competitive wins than any other actor. Daniel Melnick (April 21, 1932 – October 13, 2009) was an American film producer and movie studio executive who started working in Hollywood as a teenager in television and then became the producer of such films as "All That Jazz", "Altered States" and "Straw Dogs".  Melnick's films won more than 20 Academy Awards out of some 80 nominations. African American Lives is a PBS television miniseries hosted by historian Henry Louis Gates, Jr., focusing on African-American genealogical research.  The family histories of prominent African Americans are explored using traditional genealogic techniques as well as genetic analysis. Faces of America is a four-part Public Broadcasting Service (PBS) Public television television series hosted by Professor Henry Louis Gates.  The series originally aired February 10 – March 3, 2010 from 8–9 p.m. ET.  In Australia, this program aired on SBS One each Sunday at 7:30pm from 9 -30 January 2011.  It uses genealogical research and genetics to find the family history of 12 Americans: Elizabeth Alexander, Mario Batali, Stephen Colbert, Louise Erdrich, Malcolm Gladwell, Eva Longoria, Yo-Yo Ma, Mike Nichols, Queen Noor of Jordan, Dr. Mehmet Oz, Meryl Streep, and Kristi Yamaguchi. This is a list of Polish Academy Award winners and nominees.  This list details the performances of Polish actors, actresses, and films that have either been submitted or nominated for, or have won, an Academy Award.  This list is current as of the 80th Academy Awards ceremony held on February 24, 2008.  There were 12 Academy Awards given to Polish filmmakers or their work (see Foreign Film category), including two Honorary Academy Awards and a Technical Achievement Award.  The category of Cinematography has the strongest presence of Polish filmmakers, with two wins (both by Janusz Kamiński) and five other nominations (including two noms for Kamiński).  As of that, the cinematographer Janusz Kamiński is the most Oscar-awarded Polish filmmaker.  The second most-awarded Pole was designer Anton Grot, who won one Academy Award and was nominated to the Oscars five times more.  The director Roman Polanski won an Oscar and was nominated four more times (additionally, "Knife in the Water", film directed and written by him was also nominated).  The composer Bronislau Kaper was awarded an Oscar and was nominated three times more. The 74th Academy Awards ceremony, presented by the Academy of Motion Picture Arts and Sciences (AMPAS), took place on March 24, 2002, at the Kodak Theatre in Hollywood, Los Angeles.  During the ceremony, AMPAS presented Academy Awards (commonly referred to as Oscars) in 24 categories honoring films released in 2001.  The ceremony, televised in the United States by ABC, was produced by Laura Ziskin and directed by Louis J. Horvitz.  Actress Whoopi Goldberg hosted the show for the fourth time.  She first hosted the 66th ceremony held in 1994 and had last hosted the 71st ceremony in 1999.  Three weeks earlier, in a ceremony held at the Regent Beverly Wilshire Hotel in Beverly Hills, California, on March 2, the Academy Awards for Technical Achievement were presented by host Charlize Theron.
Answer: Professor Henry Louis Gates