Question: What is the ethnic background of this American educator and politician from the Democratic Party who was re-elected as a US senator representing Hawaii in 1994?

full_context: Document 1: United States Senate election in Hawaii, 1994: The 1994 United States Senate election in Hawaii took place on November 8, 1994. Incumbent Democratic U.S. Senator Daniel Akaka won re-election to his first full term.
Document 2: United States Senate election in Wyoming, 2014: The 2014 United States Senate election in Wyoming took place on November 4, 2014 to elect a member of the United States Senate for the State of Wyoming. Incumbent Republican Senator Mike Enzi won re-election to a fourth term in office. Enzi held Democratic nominee Charlie Hardy to just 17.5 percent of the vote – the lowest percentage of the vote for any major party nominee in Wyoming U.S. Senate electoral history out of the 39 races conducted during the direct election era.
Document 3: United States Senate election in Alaska, 2004: The 2004 United States Senate election in Alaska took place on November 2, 2004 alongside other elections to the United States Senate in other states as well as elections to the United States House of Representatives, various state and local elections, and the presidential election of that year. Incumbent Republican U.S. Senator Lisa Murkowski of Anchorage, sought election to her first full term after being appointed to serve out the rest of her father's unexpired term when he resigned in December 2002 to become Governor of Alaska. Her main challenger was Democratic former Governor Tony Knowles, her father's predecessor as governor. Murkowski won by a slight margin.
Document 4: United States Senate election in Minnesota, 1994: The 1994 United States Senate election in Minnesota was held on November 8, 1994. Incumbent Republican U.S. Senator David Durenberger decided to retire instead of seeking a third full term. Republican Rod Grams won the open seat.
Document 5: United States Senate election in Alaska, 1984: The 1984 United States Senate election in Alaska was held on November 6, 1984. Incumbent Republican Senator Ted Stevens sought re-election to a third term in the United States Senate. Owing to his popularity and the conservative bent of Alaska, Stevens did not face major opposition, and easily crushed former Alaska Attorney General John Havelock in the general election.
Document 6: Ed Case: Edward Espenett "Ed" Case (born September 27, 1952) is an American Democratic politician who represented Hawaii in the United States House of Representatives from 2002 to 2007. Case, a Blue Dog Democrat, first came to prominence in Hawaii as majority leader of the Hawaii State Legislature and for his campaign for Governor of Hawaii in 2002. First elected to the House of Representatives in 2002 in a special election to fill the seat of Patsy Mink, who died of pneumonia, Case represented Hawaii's 2nd congressional district until 2006, when he chose not to run for another term in the House of Representatives so he could challenge Senator Daniel Akaka in the Democratic primary for Akaka's U.S. Senate seat. Case lost the primary election 53%–46%.
Document 7: Mazie Hirono: Mazie Keiko Hirono ( ; Japanese name: 広野 慶子 "Hirono Keiko"; born November 3, 1947) is an American politician and the junior United States Senator from Hawaii, in office since 2013. Hirono, a member of the Democratic Party, previously served as a member of the Hawaii House of Representatives from 1985 to 1995 and as the Lieutenant Governor of Hawaii from 1994 to 2002, serving under Governor Ben Cayetano. She was the Democratic nominee for Governor of Hawaii in 2002 but was defeated by Republican Linda Lingle. She then served as a member of the United States House of Representatives for Hawaii's 2nd congressional district from 2007 to 2013.
Document 8: Daniel Inouye: Daniel Ken "Dan" Inouye (Japanese: 井上 建 , Hepburn: Inoue Ken ) was a United States Senator from Hawaii from 1963 to 2012. He was a member of the Democratic Party, and he was President pro tempore of the United States Senate (third in line in the Presidential Line of Succession) from 2010 until his death in 2012, making him the highest-ranking Japanese American politician in U.S. history. Inouye also served as chairman of the U.S. Senate Committee on Appropriations.
Document 9: List of United States Senators from Hawaii: Hawaii was admitted to the Union on August 21, 1959. Hawaii's senators belong to classes 1 and 3. Only seven people have served as U.S. Senator in the state's history. Its current senators are Democrats Mazie Hirono and Brian Schatz.
Document 10: Oren E. Long: Oren Ethelbirt Long (March 4, 1889 – May 6, 1965), was the tenth Territorial Governor of Hawaii and served from 1951 to 1953. A member of the Democratic Party of Hawaii, Long was appointed to the office after the term of Ingram Stainback. After statehood was achieved he served in the United States Senate, one of the first two, along with Hiram Fong, to represent Hawaii in that body. Long was the only non-Asian American U.S. Senator from Hawaii until the appointment of Brian Schatz to the position in 2012.
Document 11: Neil Abercrombie: Neil Abercrombie (born June 26, 1938) is an American politician who served as the seventh Governor of Hawaii from 2010 to 2014. He is a member of the Democratic Party.
Document 12: United States Senate election in Kansas, 1998: The 1998 United States Senate election in Kansas was held November 3, 1998. Incumbent Republican U.S. Senator Sam Brownback won re-election to his first full term. Brownback was first elected in a special election held in 1996, when then-Senator Bob Dole resigned to campaign for U.S. President, after 27 years in the Senate. This would've been Dole's seventh term in office had he remained in his seat.
Document 13: United States Senate election in Hawaii, 2004: The 2004 United States Senate election in Hawaii took place on November 2, 2004 alongside other elections to the United States Senate in other states as well as elections to the United States House of Representatives and various state and local elections. Incumbent Democrat U.S. Senator Daniel Inouye won re-election to an eighth term.
Document 14: Brian Schatz: Brian Emanuel Schatz (pronounced ; born October 20, 1972) is an American politician who is the senior United States Senator for Hawaii. Schatz was appointed by Governor Neil Abercrombie to replace Senator Daniel Inouye after his death in 2012.
Document 15: Daniel Akaka: Daniel Kahikina Akaka ( ; born September 11, 1924) is an American educator and politician who was a United States Senator from Hawaii from 1990 to 2013. A member of the Democratic Party, Akaka was the first U.S. Senator of Native Hawaiian ancestry.
ground_truth: Native Hawaiian