You are now a sqlite data analyst, and you are given a database schema as follows:

    【Schema】
    【DB_ID】 legislator
【Schema】
# Table: current-terms
[
(address:TEXT),
(bioguide:TEXT, Primary Key, Examples: [A000055, A000360, A000367]),
(caucus:TEXT, Examples: [Democrat]),
(chamber:TEXT, Examples: [senate, house]),
(class:REAL, Examples: [1.0, 2.0, 3.0]),
(contact_form:TEXT),
(district:REAL, Examples: [13.0, 1.0, 3.0]),
(end:TEXT, Primary Key, Examples: [1999-01-03, 2001-01-03, 2003-01-03]),
(fax:TEXT, Examples: [202-228-6321, 202-228-0514, 202-224-1651]),
(last:TEXT, Examples: [Menendez]),
(name:TEXT, Examples: [Stewart Lee Udall, Morris K. Udall, Mark Udall]),
(office:TEXT, Examples: [713 Hart Senate Office Building]),
(party:TEXT, Examples: [Democrat, Republican, Independent]),
(party_affiliations:TEXT),
(phone:TEXT, Examples: [202-224-2315, 202-224-3441, 202-224-4524]),
(relation:TEXT, Examples: [son, nephew, cousin]),
(rss_url:TEXT),
(start:TEXT, Examples: [1993-01-05, 1995-01-04, 1997-01-07]),
(state:TEXT, Examples: [OH, WA, MD]),
(state_rank:TEXT, Examples: [senior, junior]),
(title:TEXT, Examples: [Minority Whip, Majority Whip, Minority Leader]),
(type:TEXT, Examples: [rep, sen]),
(url:TEXT)
]
# Table: historical
[
(ballotpedia_id:TEXT, Examples: [Mo Cowan, Jo Bonner, Rodney Alexander]),
(bioguide_id:TEXT, Primary Key, Examples: [A000001, A000002, A000003]),
(bioguide_previous_id:TEXT, Examples: [['F000246'], ['L000266'], ['W000790']]),
(birthday_bio:TEXT, Examples: [1745-04-02, 1742-03-21, 1743-06-16]),
(cspan_id:TEXT, Examples: [12590.0, 4479.0, 103.0]),
(fec_id:TEXT, Examples: [['S6CO00168'], ['S2MN00126'], ['S0ID00057']]),
(first_name:TEXT, Examples: [Richard, Theodorick, Aedanus]),
(gender_bio:TEXT, Examples: [M, F]),
(google_entity_id_id:TEXT, Examples: [kg:/m/02pz46, kg:/m/033mf4, kg:/m/03yccv]),
(govtrack_id:INTEGER, Examples: [401222, 401521, 402032]),
(house_history_alternate_id:TEXT, Examples: [13283.0]),
(house_history_id:REAL, Examples: [9479.0, 10177.0, 10687.0]),
(icpsr_id:REAL, Examples: [507.0, 786.0, 1260.0]),
(last_name:TEXT, Examples: [Bassett, Bland, Burke]),
(lis_id:TEXT, Examples: [S134, S135, S138]),
(maplight_id:TEXT, Examples: [232.0, 581.0, 585.0]),
(middle_name:TEXT, Examples: [Samuel, Henry, Jenifer]),
(nickname_name:TEXT, Examples: [of Carrollton, of Colchester, of Milton]),
(official_full_name:TEXT, Examples: [Enid Greene Waldholtz]),
(opensecrets_id:TEXT, Examples: [N00008333, N00006953, N00009160]),
(religion_bio:TEXT, Examples: [Baptist, Roman Catholic, Methodist]),
(suffix_name:TEXT, Examples: [Jr., Sr., II]),
(thomas_id:TEXT, Examples: [01308, 01270, 01281]),
(votesmart_id:TEXT, Examples: [52156.0, 128775.0, 26829.0]),
(wikidata_id:TEXT, Examples: [Q518823, Q1749152, Q380504]),
(wikipedia_id:TEXT, Examples: [Richard Bassett (politician)])
]
# Table: current
[
(ballotpedia_id:TEXT, Examples: [Sherrod Brown, Maria Cantwell, Ben Cardin]),
(bioguide_id:TEXT, Primary Key, Examples: [A000055, A000360, A000367]),
(birthday_bio:DATE, Examples: [1952-11-09]),
(cspan_id:REAL, Primary Key, Examples: [45516.0, 5.0, 1033767.0]),
(fec_id:TEXT, Examples: [['H2OH13033', 'S6OH00163']]),
(first_name:TEXT, Examples: [Sherrod, Maria, Benjamin]),
(gender_bio:TEXT, Examples: [M, F]),
(google_entity_id_id:TEXT, Examples: [kg:/m/034s80, kg:/m/01x68t, kg:/m/025k3k]),
(govtrack_id:INTEGER, Examples: [400050, 300018, 400064]),
(house_history_id:REAL, Examples: [9996.0, 10608.0, 10629.0]),
(icpsr_id:REAL, Examples: [29389.0, 39310.0, 15408.0]),
(last_name:TEXT, Examples: [Brown, Cantwell, Cardin]),
(lis_id:TEXT, Examples: [S307, S275, S308]),
(maplight_id:REAL, Examples: [168.0, 544.0, 182.0]),
(middle_name:TEXT, Examples: [L., Richard, P.]),
(nickname_name:TEXT, Examples: [Bob, Bernie, Jim]),
(official_full_name:TEXT, Examples: [Sherrod Brown, Maria Cantwell, Benjamin L. Cardin]),
(opensecrets_id:TEXT, Examples: [N00003535, N00007836, N00001955]),
(religion_bio:TEXT, Examples: [Lutheran, Roman Catholic, Jewish]),
(suffix_name:TEXT, Examples: [Jr., III, II]),
(thomas_id:INTEGER, Examples: [136, 172, 174]),
(votesmart_id:REAL, Examples: [27018.0, 27122.0, 26888.0]),
(wikidata_id:TEXT, Examples: [Q381880, Q22250, Q723295]),
(wikipedia_id:TEXT, Examples: [Sherrod Brown, Maria Cantwell, Ben Cardin])
]
# Table: social-media
[
(bioguide:TEXT, Primary Key, Examples: [A000055, A000360, A000367]),
(facebook:TEXT, Examples: [congresswomanaumuaamata]),
(facebook_id:REAL, Examples: [1537155909907320.0, 186203844738421.0, 351671691660938.0]),
(govtrack:REAL, Examples: [412664.0, 412428.0, 412667.0]),
(instagram:TEXT, Examples: [senjoniernst, senatorwarner, SenWhitehouse]),
(instagram_id:REAL, Examples: [1582702853.0, 515327940.0, 1559860900.0]),
(thomas:INTEGER, Examples: [2222, 2019, 2283]),
(twitter:TEXT, Examples: [RepAmata, RepToddYoung, SenJoniErnst]),
(twitter_id:REAL, Examples: [3026622545.0, 234128524.0, 2856787757.0]),
(youtube:TEXT, Examples: [RepToddYoung, RepYoder, RepJohnYarmuth]),
(youtube_id:TEXT, Examples: [UCGdrLQbt1PYDTPsampx4t1A])
]
# Table: historical-terms
[
(address:TEXT),
(bioguide:TEXT, Primary Key, Examples: [A000001, A000002, A000003]),
(chamber:TEXT, Examples: [house, senate]),
(class:REAL, Examples: [2.0, 1.0, 3.0]),
(contact_form:TEXT),
(district:REAL, Examples: [9.0, 2.0, 6.0]),
(end:TEXT, Examples: [1793-03-03, 1791-03-03, 1795-03-03]),
(fax:TEXT, Examples: [202-228-6363, 202-226-6299, 202-226-0893]),
(last:TEXT, Examples: [Levy, Lambert, Bono]),
(middle:TEXT),
(name:TEXT),
(office:TEXT, Examples: [248 Russell Senate Office Building]),
(party:TEXT, Examples: [Anti-Administration, Pro-Administration, Republican]),
(party_affiliations:TEXT),
(phone:TEXT, Examples: [202-224-4024, 202-224-4543, 202-225-2706]),
(relation:TEXT),
(rss_url:TEXT),
(start:TEXT, Examples: [1789-03-04, 1790-01-01, 1791-10-24]),
(state:TEXT, Examples: [DE, VA, SC]),
(state_rank:TEXT, Examples: [junior, senior]),
(title:TEXT, Examples: [Majority Leader, Speaker]),
(type:TEXT, Examples: [sen, rep]),
(url:TEXT)
]
【Foreign keys】
current-terms.bioguide=current.bioguide_id
social-media.bioguide=current.bioguide_id
historical-terms.bioguide=historical.bioguide_id

    【Question】
    List the official full names of all the legislators who have facebook, instagram, twitter and youtube accounts. have facebook, instagram, twitter and youtube accounts refers to 'facebook' is not null AND 'instagram' is not null AND 'twitter' is not null AND 'youtube' is not null;

    【Evidence】
    have facebook, instagram, twitter and youtube accounts refers to 'facebook' is not null AND 'instagram' is not null AND 'twitter' is not null AND 'youtube' is not null;

    Please read and understand the database schema carefully, and generate an executable SQL based on the user's question and evidence. 

SQL: SELECT T1.official_full_name FROM current AS T1 INNER JOIN `social-media` AS T2 ON T1.bioguide_id = T2.bioguide WHERE T2.facebook IS NOT NULL AND T2.instagram IS NOT NULL AND T2.twitter IS NOT NULL AND T2.youtube IS NOT NULL