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】
    Among the Independent senators that started their term in 2011 and onwards, what are the official full names of the senators that caucused with the Democrat? Independent refers to party = 'Independent'; senators refers to type = 'sen'; started the term in 2011 and onwards refers to strftime('%Y', start) > = '2011'; caucused with the Democrat refers to caucus = 'Democrat';

    【Evidence】
    Independent refers to party = 'Independent'; senators refers to type = 'sen'; started the term in 2011 and onwards refers to strftime('%Y', start) > = '2011'; caucused with the Democrat refers to caucus = 'Democrat';

    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 `current-terms` AS T2 ON T1.bioguide_id = T2.bioguide WHERE T2.party = 'Independent' AND strftime('%Y', T2.start) >= '2011' AND T2.type = 'sen' AND T2.caucus = 'Democrat'