user: You are a structured reasoning expert tasked with solving problems step by step. 
You first think about the reasoning process in the mind and then provide the answer. The reasoning process and answer should be enclosed within <think> </think> and <answer> </answer> tags, respectively, i.e., <think> reasoning process here </think> <answer> answer here </answer>. 
Given a question and the associated knowledge graph triplets (entity, relation, entity), you are asked to answer the question with these triplets and your own knowledge. 
You can break down the original question into several sub-questions and explore the given knowledge graph to solve them step-by-step. If there are multiple possible answers, choose one as the final answer. 
After thinking, when you finally reach a conclusion, clearly state the answer within <answer> </answer> tags, i.e., <answer> answer here </answer>. 
Question: Who is the president of the jurisdiction that had a governmental office holder named Carlos Manuel Piedra in 2009? 
Knowledge Triplets: Luisa Diogo, government.politician.government_positions_held, m.04dm9sd
m.0n55kn3, organization.leadership.role, President
m.01317glg, business.employment_tenure.title, President
m.0110_fhv, organization.leadership.role, President
First Vice President of Cuba, government.government_office_or_title.jurisdiction, Cuba
m.04st17z, government.government_position_held.to, 2008-02-24
Cuba, government.governmental_jurisdiction.governing_officials, m.010g6nzl
I'm the only president you've got., common.topic.notable_types, Quotation
m.04tn7lv, government.government_position_held.jurisdiction_of_office, Cuba
President, business.job_title.people_with_this_title, m.011xdlvp
President, common.topic.notable_for, g.1256c_knk
Raúl Castro, government.politician.government_positions_held, m.03mr3dn
m.01317kmv, organization.leadership.role, President
President of Cuba, government.government_office_or_title.office_holders, m.0r9h970
President of the Presidency of Religious Affairs of Turkey, religion.religious_leadership_title.leaders, m.0vbcgc9
Council of State, government.governmental_body.members, m.04st17z
m.010g790n, government.government_position_held.jurisdiction_of_office, Cuba
President, organization.role.leaders, m.0114pzps
m.03mr3cs, government.government_position_held.jurisdiction_of_office, Cuba
First Vice President of Cuba, government.government_office_or_title.office_holders, m.04st17z
m.011sh1kx, organization.leadership.role, President
m.0115g4sz, organization.leadership.role, President
m.010r0d92, government.government_position_held.office_holder, Raúl Castro
m.0r9h970, government.government_position_held.office_holder, Raúl Castro
m.011qyy9l, organization.leadership.role, President
m.010qvq5k, organization.leadership.role, President
m.011cn57h, organization.leadership.person, Julio Grondona
Cuba, government.governmental_jurisdiction.governing_officials, m.010g78n_
m.011mdkg2, business.employment_tenure.title, President
m.010g6p3r, government.government_position_held.jurisdiction_of_office, Cuba
President, business.job_title.people_with_this_title, m.012w21wz
m.010r0d92, government.government_position_held.basic_title, Prime minister
m.09ynz5g, common.webpage.topic, President
President, organization.role.leaders, m.012vl0sx
President, organization.role.leaders, m.012dv8px
m.010g78wb, government.government_position_held.jurisdiction_of_office, Cuba
Hubert Humphrey, government.us_vice_president.to_president, Lyndon B. Johnson
m.011cn40s, organization.leadership.role, President
Mozambique, government.governmental_jurisdiction.governing_officials, m.04dm9pg
m.09xm5ms, common.webpage.topic, President
m.011fffbz, organization.leadership.role, President
President, business.job_title.people_with_this_title, m.011g5xlg
m.011xdlvp, business.employment_tenure.title, President
m.04st17z, government.government_position_held.jurisdiction_of_office, Cuba
m.011clphx, organization.leadership.role, President
m.011xd0mq, organization.leadership.role, President
Luisa Diogo, government.politician.government_positions_held, m.04dm9x3
President of the United Federation, common.topic.article, m.0dcrpbl
m.011qjlzn, organization.leadership.role, President
m.012zl7xj, organization.organization_board_membership.role, President
m.011c2n9v, organization.leadership.role, President
m.01142cy8, organization.leadership.role, President
Prime Minister of Cuba, government.government_office_or_title.office_holders, m.010r0d92
President of the Presidency of Religious Affairs of Turkey, common.topic.notable_for, g.11b75tcgm_
Male, people.person.gender, Raúl Castro
m.011451lj, organization.leadership.role, President
President, organization.role.leaders, m.010qvq5k
m.012hw29r, organization.leadership.role, President
m.011zpchb, business.employment_tenure.title, President
m.010g7bs9, government.government_position_held.jurisdiction_of_office, Cuba
President, organization.role.leaders, m.011kx64_
Lyndon B. Johnson, government.us_vice_president.to_president, John F. Kennedy
Luisa Diogo, government.politician.government_positions_held, m.04dm9pg
Raúl Castro, government.politician.government_positions_held, m.0r9h970
Cuba, government.governmental_jurisdiction.governing_officials, m.010g7675
m.0r9hb4g, government.government_position_held.jurisdiction_of_office, Cuba
m.0r9h970, government.government_position_held.jurisdiction_of_office, Cuba
m.0130_1r5, business.employment_tenure.title, President
Cuba, government.governmental_jurisdiction.agencies, Cuban Ministry of Foreign Affairs
m.04st17z, government.government_position_held.from, 1976-12-02
Prime minister, government.government_office_category.officeholders, m.010r0d92
m.0r9h970, government.government_position_held.from, 2006-07-31
President, common.topic.webpage, m.09wwq41
President, organization.role.leaders, m.011qjlzn
President, business.job_title.people_with_this_title, m.0125xz66
President, organization.role.leaders, m.01317kmv
President, base.ontologies.ontology_instance.equivalent_instances, m.09klh08
President, common.topic.notable_types, Fictional job title
m.012zbk_v, business.employment_tenure.title, President
m.0r9hb4g, government.government_position_held.from, 2006-07-31
m.010g6q82, government.government_position_held.jurisdiction_of_office, Cuba
m.011vg5nd, organization.leadership.role, President
Cuba, government.governmental_jurisdiction.governing_officials, m.010g790n
President, organization.role.leaders, m.011x1m4k
President, organization.role.leaders, m.0105whjl
Cuba, government.governmental_jurisdiction.governing_officials, m.010g7582
m.011rbmpv, business.employment_tenure.title, President
m.011cc_7r, business.employment_tenure.title, President
m.012sr44f, organization.leadership.person, Claudio Haddad
m.0105whjl, organization.leadership.role, President
Lyndon B. Johnson, government.us_president.vice_president, Hubert Humphrey
President of the United Federation, fictional_universe.fictional_character.species, Homo sapiens
President, organization.role.leaders, m.0hj2q2k
Cuba, government.governmental_jurisdiction.governing_officials, m.078ftf0
President, government.political_appointer.appointees, m.04dm9sd
President of the United Federation, fictional_universe.fictional_character.rank, President
m.04dm9pg, government.government_position_held.appointed_by, President
President, organization.role.leaders, m.011nqhd1
m.012nxsv7, organization.leadership.role, President
m.09ybsf2, common.webpage.topic, President
Hubert Humphrey, people.person.quotations, The President is the people's lobbyist.
m.012vl0sx, organization.leadership.role, President
m.012m3wj6, organization.organization_board_membership.role, President
President, government.political_appointer.appointees, m.04zgx28
m.010r87tv, organization.leadership.role, President
m.04st17z, government.government_position_held.basic_title, Vice President
Mike Ward, common.topic.subjects, President
Cuba, government.governmental_jurisdiction.governing_officials, m.0r9h3f5
Council of State, government.governmental_body.members, m.0r9h970
President, business.job_title.people_with_this_title, m.012s4xpj
President, business.job_title.people_with_this_title, m.0130q_5d
m.01160lcb, organization.organization_board_membership.role, President
m.010g7c_y, government.government_position_held.jurisdiction_of_office, Cuba
President, organization.role.governors, m.010qm2ps
m.010g78b2, government.government_position_held.jurisdiction_of_office, Cuba
m.078ftf0, government.government_position_held.jurisdiction_of_office, Cuba
President, organization.role.leaders, m.011clphx
President, common.topic.webpage, m.09ynz5g
m.03mr3dn, government.government_position_held.governmental_body, Council of State
President, business.job_title.people_with_this_title, m.0129fymv
President, organization.role.leaders, m.010vy_0c
m.0129fymv, business.employment_tenure.title, President
President, organization.role.leaders, m.011xd0mq
m.010r0d92, government.government_position_held.governmental_body, Council of Ministers
President, business.job_title.people_with_this_title, m.011rbmpv
Carlos Manuel Piedra, common.topic.article, m.061vk4
President, government.political_appointer.appointees, m.04dm9pg
The President is the people's lobbyist., media_common.quotation.subjects, President
m.0hj2q2k, organization.leadership.role, President
Raúl Castro, government.politician.government_positions_held, m.04st17z
m.09klh08, base.ontologies.ontology_instance_mapping.freebase_topic, President
Cuba, government.governmental_jurisdiction.governing_officials, m.010g74rg
m.0r9hb4g, government.government_position_held.office_position_or_title, Prime Minister of Cuba
m.011rgzqn, organization.leadership.role, President
President, organization.role.leaders, m.01142cy8
President, media_common.quotation_subject.quotations_about_this_subject, I'm the only president you've got.
m.0110h0fp, business.employment_tenure.title, President
m.010r11r2, organization.leadership.role, President
President, common.topic.webpage, m.09ybsf2
m.012dv8px, organization.leadership.role, President
President, common.topic.webpage, m.09xm5ms
Carlos Manuel Piedra, people.person.gender, Male
President, organization.role.leaders, m.010r87tv
President Blake, common.topic.article, m.0hcgg3n
President, business.job_title.people_with_this_title, m.012zbk_v
President, base.schemastaging.context_name.pronunciation, g.125_m3llz
m.010g7675, government.government_position_held.jurisdiction_of_office, Cuba
President of the United Federation, common.topic.notable_for, g.125c1pgqy
m.09wsrb0, common.webpage.topic, President
The President is the people's lobbyist., media_common.quotation.author, Hubert Humphrey
Cuba, government.governmental_jurisdiction.governing_officials, m.010g7c_y
Cuba, government.governmental_jurisdiction.governing_officials, m.03mr3dn
m.03mr3c5, government.government_position_held.jurisdiction_of_office, Cuba
m.011g5xlg, business.employment_tenure.title, President
President, business.job_title.people_with_this_title, m.01317glg
President, organization.role.leaders, m.011qyy9l
m.0r9hb4g, government.government_position_held.governmental_body, Council of Ministers
Carlos Manuel Piedra, government.politician.government_positions_held, m.010g6nzl
m.011cn57h, organization.leadership.role, President
Council of State, government.governmental_body.jurisdiction, Cuba
m.0130q_5d, business.employment_tenure.title, President
m.011rj_gr, business.employment_tenure.title, President
m.010g6q9b, government.government_position_held.jurisdiction_of_office, Cuba
President, organization.role.governors, m.0130dx4d
m.010qln2x, organization.organization_board_membership.role, President
Cuban Ministry of Foreign Affairs, government.government_agency.jurisdiction, Cuba
President, common.topic.webpage, m.09y71d4
President, organization.role.governors, m.01160lcb
Achmet Chatziosman, freebase.valuenotation.is_reviewed, Government Positions Held
Cuba, government.governmental_jurisdiction.governing_officials, m.0r9h970
President, organization.role.leaders, m.011rgzqn
Cuba, government.governmental_jurisdiction.governing_officials, m.0r9hb4g
m.03mr3dn, government.government_position_held.office_holder, Raúl Castro
President, organization.role.governors, m.012zl7xj
President, organization.role.governors, m.012h6rtl
m.0r8vsll, organization.leadership.role, President
m.04st17z, government.government_position_held.governmental_body, Council of State
m.010g7582, government.government_position_held.jurisdiction_of_office, Cuba
m.010g6nzl, government.government_position_held.office_holder, Carlos Manuel Piedra
m.09w3vlb, common.webpage.topic, President
Politician, type.type.expected_by, Resulting head of government
m.010g71fk, government.government_position_held.jurisdiction_of_office, Cuba
Vice President, government.government_office_category.officeholders, m.04st17z
President of the United Federation, fictional_universe.fictional_employer.employees, m.0chvz2x
President, common.topic.webpage, m.09wsrb0
m.012w21wz, business.employment_tenure.title, President
m.04dm9sd, government.government_position_held.office_holder, Luisa Diogo
President, organization.role.leaders, m.01281197
m.04dm9x3, government.government_position_held.office_holder, Luisa Diogo
m.0r9h970, government.government_position_held.office_position_or_title, President of Cuba
Cuba, government.governmental_jurisdiction.governing_officials, m.010g78b2
m.03mr3dn, government.government_position_held.basic_title, President
President, business.job_title.people_with_this_title, m.011rbhpz
President, organization.role.leaders, m.011rd41j
m.010vyf9y, organization.leadership.role, President
m.011rd41j, organization.leadership.role, President
President of Cuba, government.government_office_or_title.office_holders, m.03mr3dn
m.04dm9pg, government.government_position_held.jurisdiction_of_office, Mozambique
President, common.topic.article, m.060cg
m.012sr44f, organization.leadership.role, President
President, organization.role.leaders, m.011vg5nd
m.01281197, organization.leadership.role, President
President, organization.role.leaders, m.011byq3j
President, business.job_title.people_with_this_title, m.0110h0fp
m.0r9hb4g, government.government_position_held.to, 2008-02-24
Cuba, government.governmental_jurisdiction.governing_officials, m.010g71fk
President of the United Federation, common.topic.notable_types, Comic Book Character
m.011mdkxn, organization.leadership.role, President
m.04st17z, government.government_position_held.office_position_or_title, First Vice President of Cuba
m.04st17z, government.government_position_held.office_holder, Raúl Castro
m.0r9h970, government.government_position_held.to, 2008-02-24
m.010vz03z, organization.leadership.role, President
m.011nqb82, business.employment_tenure.title, President
President, business.job_title.people_with_this_title, m.010zf_xg
m.010r0d92, government.government_position_held.from, 2008-02-24
Cuba, government.governmental_jurisdiction.government_positions, First Vice President of Cuba
m.010r0d92, government.government_position_held.jurisdiction_of_office, Cuba
Cuba, government.governmental_jurisdiction.governing_officials, m.04tn7lv
President, organization.role.leaders, m.0129f72l
President, organization.role.leaders, m.011mdkxn
m.011v50n9, organization.leadership.role, President
m.010qm2ps, organization.organization_board_membership.role, President
m.010g74rg, government.government_position_held.jurisdiction_of_office, Cuba
m.011kx64_, organization.leadership.role, President
President, business.job_title.people_with_this_title, m.011nqb82
President, organization.role.leaders, m.012sr44f
m.011x1m4k, organization.leadership.role, President
President, business.job_title.people_with_this_title, m.012w1z7t
m.0116yb__, organization.leadership.role, President
President, government.government_office_category.officeholders, m.03mr3dn
President, organization.role.leaders, m.011cn57h
President, common.topic.webpage, m.09w3vlb
m.09wwq41, common.webpage.topic, President
President, common.topic.webpage, m.09ylvg9
President, organization.role.leaders, m.010vz03z
m.0r9h970, government.government_position_held.governmental_body, Council of State
President, business.job_title.people_with_this_title, m.011cc_7r
Carlos Manuel Piedra, common.topic.notable_types, Politician
Raúl Castro, government.politician.government_positions_held, m.010r0d92
Politician, type.type.expected_by, Officeholder
Cuba, government.governmental_jurisdiction.governing_officials, m.010g78wb
m.010g6nzl, government.government_position_held.jurisdiction_of_office, Cuba
Acting Prime Minister, government.government_office_category.officeholders, m.0r9hb4g
President, organization.role.leaders, m.011c2n9v
Cuba, government.governmental_jurisdiction.governing_officials, m.03mr3cs
m.012zc8t4, business.employment_tenure.title, President
m.09y71d4, common.webpage.topic, President
m.04dm9pg, government.government_position_held.office_holder, Luisa Diogo
President, business.job_title.people_with_this_title, m.011n_z58
Cuba, government.governmental_jurisdiction.governing_officials, m.010r0d92
Officeholder, type.property.reverse_property, Government Positions Held
Cuba, government.governmental_jurisdiction.government_bodies, Council of State
m.04dm9x3, government.government_position_held.appointed_by, President
m.03mr3dn, government.government_position_held.jurisdiction_of_office, Cuba
John F. Kennedy, government.us_president.vice_president, Lyndon B. Johnson
Cuba, government.governmental_jurisdiction.governing_officials, m.0bp7jzz
m.04dm9pg, government.government_position_held.basic_title, Prime minister
Council of Ministers, government.governmental_body.members, m.0r9hb4g
Vice President of the United States, government.government_office_or_title.jurisdiction, United States of America
President, organization.role.leaders, m.012hvzcf
President, business.job_title.people_with_this_title, m.012zc8t4
m.03mr3dn, government.government_position_held.office_holder, Raúl Castro
Raúl Castro, government.politician.party, m.040qb5s
President, business.job_title.people_with_this_title, m.011sf3v6
President of Cuba, government.government_office_or_title.jurisdiction, Cuba
Cuba, government.governmental_jurisdiction.agencies, Dirección General de Inteligencia
m.011nqhd1, organization.leadership.role, President
Cuba, government.governmental_jurisdiction.governing_officials, m.010g6q9b
m.010x4k8d, organization.leadership.role, President
President, common.topic.subjects, MA$TADON
Officeholder, rdf-schema#range, Politician
Cuba, government.governmental_jurisdiction.governing_officials, m.03mr3c5
President Blake, common.topic.notable_for, g.1255xltly
President, organization.role.leaders, m.0r8vsll
m.0r9hb4g, government.government_position_held.basic_title, Acting Prime Minister
President, organization.role.leaders, m.011sh1kx
m.010g6nfp, government.government_position_held.jurisdiction_of_office, Cuba
m.0125xz66, business.employment_tenure.title, President
President, organization.role.governors, m.010qln2x
m.03mr3dn, government.government_position_held.office_position_or_title, President of Cuba
MA$TADON, common.topic.subject_of, President
Council of Ministers, government.governmental_body.members, m.010r0d92
m.0bp7jzz, government.government_position_held.jurisdiction_of_office, Cuba
m.011byq3j, organization.leadership.role, President
The President is the people's lobbyist., common.topic.notable_types, Quotation
Politician, type.type.domain, Government
I'm the only president you've got., common.topic.notable_for, g.1255tbwkp
President, business.job_title.people_with_this_title, m.011mdkg2
President, organization.role.leaders, m.010vyf9y
Raúl Castro, government.politician.party, m.012kzldb
Cuba, government.governmental_jurisdiction.governing_officials, m.010g6q82
President, business.job_title.people_with_this_title, m.011zpchb
m.09ylvg9, common.webpage.topic, President
Cuba, government.governmental_jurisdiction.governing_officials, m.010g7bs9
m.010g78n_, government.government_position_held.jurisdiction_of_office, Cuba
m.011rbhpz, business.employment_tenure.title, President
President, organization.role.leaders, m.0n55kn3
m.0r9h3f5, government.government_position_held.jurisdiction_of_office, Cuba
m.0r9hb4g, government.government_position_held.office_holder, Raúl Castro
Cuba, government.governmental_jurisdiction.governing_officials, m.04st17z
Carlos Manuel Piedra, common.topic.notable_for, g.125dtc6y0
Prime Minister of Cuba, government.government_office_or_title.office_holders, m.0r9hb4g
President of the United Federation, fictional_universe.fictional_character.appears_in_these_fictional_universes, SEGA Universe
President, organization.role.leaders, m.012nxsv7
President, organization.role.leaders, m.012dv8pl
President, government.government_position_held.basic_title, m.03mr3dn
Cuba, government.governmental_jurisdiction.government_positions, President of Cuba
Carlos Manuel Piedra, people.person.gender, Male
m.04dm9sd, government.government_position_held.appointed_by, President
Cuba, government.governmental_jurisdiction.government_bodies, National Assembly of People's Power
Cuba, government.governmental_jurisdiction.governing_officials, m.010g7bl0
President, organization.role.leaders, m.0110_fhv
m.03mr3dn, government.government_position_held.from, 2008-02-24
m.010zf_xg, business.employment_tenure.title, President
m.012w1z7t, business.employment_tenure.title, President
President, organization.role.leaders, m.0116yb__
Dirección General de Inteligencia, government.government_agency.jurisdiction, Cuba
President of the Presidency of Religious Affairs of Turkey, common.topic.notable_types, Religious Leadership Title
President, organization.role.leaders, m.011451lj
President, media_common.quotation_subject.quotations_about_this_subject, The President is the people's lobbyist.
m.010r0d92, government.government_position_held.office_position_or_title, Prime Minister of Cuba
m.012s4xpj, business.employment_tenure.title, President
m.04zgx28, government.government_position_held.appointed_by, President
United States of America, government.governmental_jurisdiction.government_positions, Vice President of the United States
Government, freebase.equivalent_topic.equivalent_domain, Government
m.012h6rtl, organization.organization_board_membership.role, President
m.011p3r_p, organization.leadership.role, President
President, government.political_appointer.appointees, m.04dm9x3
m.012dv8pl, organization.leadership.role, President
President, organization.role.governors, m.012m3wj6
President, organization.role.leaders, m.0115g4sz
Raúl Castro, government.politician.government_positions_held, m.0r9hb4g
Carlos Manuel Piedra, freebase.valuenotation.has_value, Place of birth
m.040qb5s, government.political_party_tenure.politician, Raúl Castro
m.0114pzps, organization.leadership.role, President
President, business.job_title.people_with_this_title, m.011rj_gr
Cuba, government.governmental_jurisdiction.governing_officials, m.010g6k3l
m.010g6nzl, government.government_position_held.basic_title, Acting President
m.011sf3v6, business.employment_tenure.title, President
President of the United Federation, fictional_universe.fictional_character.gender, Male
President, organization.role.leaders, m.011fffbz
President, business.job_title.people_with_this_title, m.011sc0fc
m.010vy_0c, organization.leadership.role, President
m.0130dx4d, organization.organization_board_membership.role, President
m.010g6k3l, government.government_position_held.jurisdiction_of_office, Cuba
President, organization.role.leaders, m.011cn40s
Acting President, government.government_office_category.officeholders, m.0r9h970
National Assembly of People's Power, government.governmental_body.jurisdiction, Cuba
m.012kzldb, government.political_party_tenure.politician, Raúl Castro
President, organization.role.leaders, m.011p3r_p
m.011sc0fc, business.employment_tenure.title, President
Politician, type.type.properties, Government Positions Held
President, common.topic.subject_of, Mike Ward
President of the United Federation, fictional_universe.fictional_character.places_lived, Central City
m.011n_z58, business.employment_tenure.title, President
President, organization.role.leaders, m.010x4k8d
m.0r9h970, government.government_position_held.basic_title, Acting President
Cuba, government.governmental_jurisdiction.governing_officials, m.010g6p3r
m.0129f72l, organization.leadership.role, President
m.0130c97z, business.employment_tenure.title, President
President, business.job_title.people_with_this_title, m.0130_1r5
President, organization.role.leaders, m.012hw29r
President, organization.role.leaders, m.011v50n9
Officeholder, owl#inverseOf, Government Positions Held
m.010g7bl0, government.government_position_held.jurisdiction_of_office, Cuba
President, organization.role.leaders, m.010r11r2
President of the United Federation, common.topic.image, president.png
President, fictional_universe.character_rank.characters_of_this_rank, President of the United Federation
President, business.job_title.people_with_this_title, m.0130c97z
m.012hvzcf, organization.leadership.role, President
Council of State, government.governmental_body.members, m.03mr3dn
Cuba, government.governmental_jurisdiction.governing_officials, m.010g6nfp

Answer: Raúl Castro