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: where is the national ffa foundation located today? 
Knowledge Triplets: Biology, education.field_of_study.subdisciplines, Agriculture
Georges Maheux, education.academic.research_areas, Agriculture
Agriculture, base.landcover.geographical_feature_category.location_s, Bird Conservation Region 26
Agriculture, business.industry.companies, Openfield
Agriculture, business.industry.companies, AgriSA
National FFA Organization, organization.organization.sectors, Agriculture
Agriculture, base.skosbase.vocabulary_equivalent_topic.narrower_concept, Green Revolution
Agriculture, business.industry.companies, Universal Cooperatives
Agriculture, award.award_discipline.awards_in_this_discipline, World Food Prize
m.0wkkztl, location.mailing_address.citytown, Alexandria
National FFA Organization, base.schemastaging.non_profit_extra.classification, Agricultural, Youth Development
United States of America, base.biblioness.bibs_topic.subsumes, United States of America
m.0pqg9g3, organization.non_profit_registration.registered_as, 501(c)(3)
Internal Revenue Service, government.government_agency.jurisdiction, United States of America
Agriculture, common.topic.subject_of, Auctioneer
Agriculture, business.industry.companies, Weidemann GmbH
Agriculture, base.descriptive_names.names.descriptive_name, m.0106mnd9
m.0pqg9g3, organization.non_profit_registration.registering_agency, Internal Revenue Service
Agriculture, education.field_of_study.journals_in_this_discipline, Agricultural and Forest Meteorology
Agriculture, business.industry.companies, Adler Seeds
Agriculture, business.industry.companies, MFA Incorporated
Agricultural, Youth Development, base.skosbase.skos_concept.in_scheme, National Taxonomy of Exempt Entities
m.05t5nmn, common.webpage.topic, National FFA Organization
Agrochemical, base.nasagcmd.gcmd_keyword1.included_within_keyword, Agriculture
Agriculture, education.field_of_study.journals_in_this_discipline, African Journal of Farm Child and Youth Development
Nonprofit organization, freebase.type_profile.strict_included_types, Organization
Agriculture, business.industry.companies, Raven Industries, Inc.
Smiling Hill Farm, business.business_operation.industry, Agriculture
Agriculture, education.field_of_study.students_majoring, m.0105sgdw
Agriculture, education.field_of_study.students_majoring, m.0k1cgw_
Agrochemical, common.topic.notable_types, Industry
Agriculture, business.industry.companies, Talaat Moustafa Group
Agriculture, business.industry.companies, g.1q54w0q89
Agriculture, business.industry.companies, Ditta Cugini Randi
United States of America, base.locations.countries.states_provinces_within, Virginia
Agriculture, base.descriptive_names.names.descriptive_name, m.0106mmyy
Monsanto, business.business_operation.industry, Agrochemical
Agriculture, common.topic.webpage, m.0b496zd
Nonprofit organization, freebase.type_profile.equivalent_topic, Non-profit organization
Agriculture, business.industry.companies, Archer Daniels Midland
Non-profit organization, freebase.equivalent_topic.equivalent_type, Nonprofit organization
Agriculture, common.topic.subject_of, Lawn and Garden Services
Polyface Farm, business.business_operation.industry, Agriculture
Farmer, organization.organization_sector.organizations_in_this_sector, g.12245wrh
Agriculture, education.field_of_study.journals_in_this_discipline, African Journal of Range & Forage Science
Agriculture, business.industry.companies, Industry of Machinery and Tractors
Science Citation Index Expanded, base.database.database.topic_s, Biology
Agriculture, base.ontologies.ontology_instance.equivalent_instances, m.07ndjv_
Agriculture, base.descriptive_names.names.descriptive_name, m.0106mmb3
m.0sv_b9n, education.education.major_field_of_study, Agriculture
Agriculture, business.industry.companies, Claas
Agriculture, education.field_of_study.students_majoring, m.0w298k3
National FFA Organization, common.topic.webpage, m.05t5nmn
Agriculture, base.descriptive_names.names.descriptive_name, m.010nl_ds
United States of America, base.biblioness.bibs_topic.is_really, United States of America
Polyface Farm, organization.organization.place_founded, Virginia
Nonprofit organization, type.type.domain, Organization
m.09w_d69, common.webpage.topic, Agriculture
Agriculture, education.field_of_study.journals_in_this_discipline, Queensland Agricultural Journal
Agriculture, education.field_of_study.academics_in_this_field, Georges Maheux
Nonprofit organization, type.type.expected_by, Bingo non-profit organization
Agriculture, base.nasagcmd.gcmd_keyword1.includes_keyword_s, Agricultural Aquatic Sciences
Agriculture, business.industry.companies, Case Corporation
Agrochemical, business.industry.companies, The Mosaic Company
Agriculture, business.industry.companies, Aeromeh
Agriculture, business.industry.companies, Amazonen-Werke
Agriculture, business.industry.companies, Earthbound Farm
Agriculture, education.field_of_study.students_majoring, m.0sv_b9n
Agriculture, base.descriptive_names.names.descriptive_name, m.010nl_jb
m.0w298k3, education.education.major_field_of_study, Agriculture
m.0w1772l, education.education.major_field_of_study, Agriculture
Agriculture, base.skosbase.vocabulary_equivalent_topic.narrower_concept, Agricultural industries
Agriculture, business.industry.companies, Daxcon
Agriculture, business.industry.companies, BASF
Alexandria, base.biblioness.bibs_location.country, United States of America
Alexandria, location.hud_county_place.place, Alexandria
m.0k1cgw_, education.education.major_field_of_study, Agriculture
Agriculture, business.industry.companies, Darigold
Agriculture, education.field_of_study.journals_in_this_discipline, Soil Research
Agriculture, common.topic.image, 2005gdpAgricultural
Agriculture, business.industry.companies, Mirat
Agriculture, education.field_of_study.journals_in_this_discipline, California Agriculture
Nonprofit organization, common.topic.article, m.04gbcbm
Virginia, location.administrative_division.first_level_division_of, United States of America
Agriculture, business.industry.companies, Polyface Farm
Agriculture, education.field_of_study.students_majoring, m.02kq23g
Agriculture, base.descriptive_names.names.descriptive_name, m.0106mp92
Agriculture, business.industry.companies, Agrowill Group
Agriculture, business.industry.companies, Vital Farms
Earthbound Farm, location.location.containedby, United States of America
Agriculture, common.topic.webpage, m.0b6rlx_
Alexandria, location.us_county.county_seat, Alexandria
22314, location.postal_code.country, United States of America
Agriculture, base.descriptive_names.names.descriptive_name, m.0102z358
m.0wkkztl, location.mailing_address.country, United States of America
Agriculture, business.industry.companies, Bunge Limited
Agriculture, base.database.database_topic.database_s_for_this_topic, Science Citation Index Expanded
Nonprofit organization, freebase.type_hints.included_types, Organization
National FFA Organization, common.topic.article, m.0158yc
Agriculture, business.industry.companies, Sirsalgarh
m.0b6rlx_, common.webpage.topic, Agriculture
Agriculture, business.industry.companies, Chiquita Brands International
Agricultural, Youth Development, base.schemastaging.non_profit_classification.organizations, National FFA Organization
Agriculture, business.industry.companies, g.12245wrh
Agriculture, people.professional_field.professions_in_this_field, Agriculturist
Agriculture, business.industry.companies, HarvEast Holding
Agriculture, education.field_of_study.journals_in_this_discipline, African Journal of Food, Agriculture, Nutrition and Development
National FFA Organization, common.topic.notable_types, Nonprofit organization
Agriculture, business.industry.companies, Fresh Del Monte Produce
Agrochemical, business.industry.companies, Monsanto
Nonprofit organization, freebase.type_profile.strict_included_types, Topic
Agriculture, business.industry.companies, Mendel Biotechnology, Inc.
m.0b6r_8b, common.webpage.topic, Agriculture
Agriculture, business.industry.companies, g.120vhftz
Agriculture, base.descriptive_names.names.descriptive_name, m.0106mjkv
Agriculture, education.field_of_study.journals_in_this_discipline, African Crop Science Journal
Agriculture, business.industry.companies, Swire Group
m.011jsdmr, education.education.major_field_of_study, Agriculture
Nonprofit organization, freebase.type_profile.kind, Definition
m.0r6545y, organization.leadership.role, CEO
Agriculture, business.industry.companies, Massey Ferguson
Agriculture, education.field_of_study.students_majoring, m.0jzv3ds
Agriculture, education.field_of_study.students_majoring, m.011jsdly
m.04mhjt4, education.education.major_field_of_study, Agriculture
m.04hzczj, organization.organization_board_membership.member, Douglas C. DeVries
Agriculture, business.industry.companies, Homestead Farms
Agriculture, base.descriptive_names.names.descriptive_name, m.010nl_ff
m.0b496zd, common.webpage.topic, Agriculture
Agriculture, base.descriptive_names.names.descriptive_name, m.0106mn_k
Virginia, base.biblioness.bibs_location.country, United States of America
Agriculture, common.topic.webpage, m.0b6rwc5
Agriculture, business.industry.companies, IOI Group
Animal science, base.litcentral.metadata_keyword1.keyword_thesaurus, NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 6.0.0.0.0
Nonprofit organization, type.type.properties, Registered with
Agriculture, business.industry.companies, Technofarm International
W. Dwight Armstrong, business.board_member.leader_of, m.0r6545y
Earthbound Farm, business.business_operation.industry, Agriculture
Agriculture, business.industry.companies, Igus
Virginia, location.administrative_division.country, United States of America
m.01047wk4, education.education.major_field_of_study, Agriculture
Agriculture, base.descriptive_names.names.descriptive_name, m.0106s1nt
Agriculture, base.descriptive_names.names.descriptive_name, m.0105yq2l
Agriculture, business.industry.companies, McCormick Tractors
Agriculture, base.descriptive_names.names.descriptive_name, m.0105yq3d
m.09y1nxz, common.webpage.topic, Agriculture
Agriculture, business.industry.companies, Lite-Trac
m.010l0s2j, education.education.major_field_of_study, Agriculture
Agriculture, business.industry.companies, Noble Group
Agriculture, business.industry.companies, Feronia Inc.
Agriculture, business.industry.companies, GrainCorp
Agriculture, business.industry.companies, Calix Limited
Agriculture, award.award_discipline.awards_in_this_discipline, Wolf Prize in Agriculture
Agriculture, base.skosbase.vocabulary_equivalent_topic.equivalent_concept, Agriculture
Douglas C. DeVries, business.board_member.organization_board_memberships, m.04hzczj
Agriculture, base.descriptive_names.names.descriptive_name, m.0102z322
Agriculture, business.industry.companies, DevGen
Agriculture, business.industry.companies, Vilmorin
Agriculture, base.descriptive_names.names.descriptive_name, m.0106s19n
Agriculture, education.field_of_study.students_majoring, m.04mhjt4
United States of America, location.country.first_level_divisions, Virginia
Agriculture, business.industry.companies, Prairie Farms Dairy
Agriculture, base.descriptive_names.names.descriptive_name, m.010nl_bw
Organization, type.type.domain, Organization
m.07ndjv_, base.ontologies.ontology_instance_mapping.freebase_topic, Agriculture
Agriculture, business.industry.companies, Berry and Wollstonecraft
Agriculture, base.descriptive_names.names.descriptive_name, m.0102z349
Agriculture, business.industry.companies, Sunkist Growers, Incorporated
Nonprofit organization, type.type.expected_by, Official charity
Agriculture, business.industry.companies, Golden Harvest Seeds
Agriculture, business.industry.companies, Bernard Matthews Farms
Agriculture, business.industry.companies, Garst Seed Company
Agriculture, business.industry.companies, Illovo Sugar
Agriculture, education.field_of_study.journals_in_this_discipline, Journal of the Science of Food and Agriculture
m.09yv8tl, common.webpage.topic, Agriculture
m.0wkkztl, common.topic.notable_for, g.1yl5y06g9
Agriculture, exhibitions.exhibition_subject.exhibitions_created_about_this_subject, Agriculture
Biology, education.field_of_study.journals_in_this_discipline, Journal of Animal Science
Nonprofit organization, freebase.type_hints.included_types, Employer
Agriculture, business.industry.companies, Perigreen
Alexandria, location.location.containedby, Virginia
Polyface Farm, location.location.containedby, United States of America
Alexandria, base.biblioness.bibs_location.state, Virginia
m.0r6545y, organization.leadership.organization, National FFA Organization
Agriculture, business.industry.companies, Dominion Group
Agriculture, base.skosbase.vocabulary_equivalent_topic.narrower_concept, Farms
m.09yn_76, common.webpage.topic, Agriculture
Agriculture, business.industry.companies, Jain Irrigation Systems
Agriculture, base.descriptive_names.names.descriptive_name, m.01062tyn
Agriculture, business.industry.companies, Vale Fertilizantes
Agriculture, business.industry.companies, China Agri-Industries Holdings
Agriculture, business.industry.companies, Seaboard Corporation
Agriculture, base.descriptive_names.names.descriptive_name, m.0102z32d
Agriculture, base.landcover.code_category.codes_of_this_category, Agricultural crops
Agriculture, base.nasagcmd.gcmd_keyword1.includes_keyword_s, Agricultural Plant Science
Agriculture, base.nasagcmd.gcmd_keyword1.includes_keyword_s, Animal Commodities
Organization, freebase.type_hints.included_types, Topic
Agriculture, business.industry.companies, Agrium
m.0n45f78, education.education.major_field_of_study, Agriculture
Agriculture, common.topic.notable_for, g.12564_mjb
Monsanto, business.business_operation.industry, Agriculture
Agriculture, business.industry.companies, AMERICAN CRYSTAL SUGAR CO /MN/
m.0105sgdw, education.education.major_field_of_study, Agriculture
Animal science, education.field_of_study.journals_in_this_discipline, Animal Production Science
m.0wkkztl, freebase.valuenotation.has_no_value, Street Address 3
Agriculture, education.field_of_study.journals_in_this_discipline, Journal of Animal Science
Agriculture, base.descriptive_names.names.descriptive_name, m.0106mj48
Agriculture, business.industry.companies, SESL Australia
Agriculture, education.field_of_study.students_majoring, m.0k2vmny
m.0b6rwc5, common.webpage.topic, Agriculture
m.0r6545y, organization.leadership.person, W. Dwight Armstrong
Agriculture, business.industry.companies, Riceland Foods
m.0wkkztl, freebase.valuenotation.has_no_value, Street Address 4
m.0wkkztl, location.mailing_address.citytown, Alexandria
Agriculture, common.topic.webpage, m.09yv8tl
Location, freebase.type_hints.included_types, Topic
Agriculture, base.descriptive_names.names.descriptive_name, m.010nl_7_
Agriculture, business.industry.companies, IMC Global
m.02kq23g, education.education.major_field_of_study, Agriculture
Agriculture, business.industry.companies, Sanyuan Group
Agriculture, common.topic.webpage, m.0b6r_8b
United States of America, location.country.administrative_divisions, Virginia
Agriculture, business.industry.companies, Dairy Farmers of America
Alexandria, location.citytown.postal_codes, 22314
Animal science, base.nasagcmd.gcmd_keyword1.included_within_keyword, Agriculture
Agriculture, business.industry.companies, The Mosaic Company
Agriculture, common.topic.webpage, m.09w_d69
m.011jsdly, education.education.major_field_of_study, Agriculture
Agriculture, freebase.valuenotation.has_value, NAICS 2007 code
Agriculture, business.industry.companies, Obery Farms
Agriculture, business.industry.companies, ContiGroup Companies
Agriculture, common.topic.subject_of, Trade Tested
Agriculture, business.industry.companies, Taiwan Sugar Corporation
Agriculture, education.field_of_study.students_majoring, m.0k1cgwm
Agriculture, business.industry.companies, Zeeland Farm Services
AgriSA, business.business_operation.industry, Agriculture
Agrochemical, business.industry.companies, Agrium
Agriculture, base.schemastaging.context_name.pronunciation, g.125_ndwx_
Agriculture, education.field_of_study.students_majoring, m.01047wk4
Agriculture, business.industry.companies, Tereos
National FFA Organization, common.topic.notable_for, g.1257mmy_m
National FFA Organization, organization.non_profit_organization.registered_with, m.0pqg9g3
United States of America, base.aareas.schema.administrative_area.administrative_children, Virginia
Alexandria, location.us_county.hud_county_place, Alexandria
Agriculture, business.industry.companies, Rea Vipingo
Agriculture, business.industry.companies, Mycogen Seeds
Agriculture, common.topic.article, m.0hkr
Agriculture, business.industry.companies, Rural Directions
Agriculture, organization.organization_type.organizations_of_this_type, PT INDAH SARI WINDU
Agriculture, business.industry.companies, DuPont Pioneer
Agriculture, education.field_of_study.journals_in_this_discipline, Animal Production Science
Agriculture, base.descriptive_names.names.descriptive_name, m.0106mlzl
Agriculture, base.skosbase.vocabulary_equivalent_topic.narrower_concept, Sustainable agriculture
Agriculture, education.field_of_study.students_majoring, m.0n45f78
Agriculture, business.industry.companies, Falegh Sanat
National FFA Organization, organization.organization.leadership, m.0r6545y
Agriculture, award.award_discipline.awards_in_this_discipline, Infosys Prize for Life Sciences
Agriculture, business.industry.companies, AVEBE
Agriculture, base.descriptive_names.names.descriptive_name, m.010nl_bb
m.0k2vmny, education.education.major_field_of_study, Agriculture
Farmer, people.profession.part_of_professional_field, Agriculture
m.0jzv3ds, education.education.major_field_of_study, Agriculture
Agriculture, business.industry.companies, Smiling Hill Farm
Polyface Farm, organization.organization.sectors, Agriculture
Agriculture, common.topic.webpage, m.09yn_76
Agriculture, base.descriptive_names.names.descriptive_name, m.0102z33w
Virginia, base.aareas.schema.administrative_area.administrative_parent, United States of America
Agriculture, business.industry.companies, Dominion Farms Limited
Agriculture, education.field_of_study.journals_in_this_discipline, EuroChoices
Agriculture, business.industry.companies, Alberta Wheat Pool
Agriculture, base.descriptive_names.names.descriptive_name, m.0106mlng
Biology, base.database.database_topic.database_s_for_this_topic, Science Citation Index Expanded
Agriculture, education.field_of_study.students_majoring, m.011jsdmr
Agriculture, business.industry.companies, KWS SAAT
m.0wkkztl, location.mailing_address.postal_code, 22314
m.05t5nmn, common.webpage.category, Official Website
Agriculture, business.industry.companies, Grow to Work
Agriculture, base.onephylogeny.type_of_thing.includes, Agroforestry
Agriculture, business.industry.companies, Alberta Pacific Grain Company
Nonprofit organization, freebase.type_hints.included_types, Topic
Polyface Farm, location.location.containedby, Virginia
Agriculture, common.topic.subject_of, Dome Technology
National FFA Organization, organization.organization.headquarters, m.0wkkztl
Agriculture, base.nasagcmd.gcmd_keyword1.includes_keyword_s, Animal science
Agriculture, business.industry.companies, Foundation for Agronomic Research
Agriculture, common.topic.webpage, m.09y1nxz
Agriculture, base.descriptive_names.names.descriptive_name, m.010nl_6p
Agriculture, base.descriptive_names.names.descriptive_name, m.0106mpl2
Agriculture, business.industry.companies, Zen-Noh
Virginia, base.locations.states_and_provences.country, United States of America
Alexandria, location.hud_county_place.county, Alexandria
AgriSA, common.topic.notable_types, Organization
Agriculture, base.descriptive_names.names.descriptive_name, m.0106mnpy
m.0wkkztl, location.mailing_address.state_province_region, Virginia
Agriculture, business.industry.companies, Monsanto
Agriculture, base.descriptive_names.names.descriptive_name, m.010nl_jx
Agriculture, base.landcover.code_category.codes_of_this_category, Agricultural Crop Fields
Agrochemical, base.litcentral.metadata_keyword1.keyword_thesaurus, NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 6.0.0.0.0
Smiling Hill Farm, location.location.containedby, United States of America
m.0pqg9g3, organization.non_profit_registration.non_profit_organization, National FFA Organization
Agriculture, exhibitions.exhibition_subject.exhibitions_created_about_this_subject, Great Yorkshire Show
Alexandria, location.administrative_division.second_level_division_of, United States of America
Agriculture, business.industry.companies, Rogers Orchards
Agriculture, business.industry.companies, Danisco
Agriculture, base.skosbase.vocabulary_equivalent_topic.narrower_concept, Agronomy
Agriculture, base.nasagcmd.gcmd_keyword1.includes_keyword_s, Agrochemical
National FFA Organization, organization.organization.board_members, m.04hzczj
Agriculture, base.litcentral.metadata_keyword1.keyword_thesaurus, NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 6.0.0.0.0
Non-profit organization, common.topic.notable_types, Industry
Agriculture, business.industry.companies, Wayne Farms
22314, location.location.containedby, Alexandria
Biology, award.award_discipline.awards_in_this_discipline, Infosys Prize for Life Sciences
Agriculture, business.industry.companies, Vion NV
Agriculture, education.field_of_study.students_majoring, m.010l0s2j
Agriculture, education.field_of_study.subdiscipline_of, Biology
Agriculture, business.industry.companies, Growmark
Agriculture, base.descriptive_names.names.descriptive_name, m.01062tyw
Agriculture, common.topic.notable_types, Industry
m.0k1cgwm, education.education.major_field_of_study, Agriculture
Agriculture, common.topic.subjects, Rural Directions
Agriculture, business.industry.companies, Felleskjøpet
Agriculture, business.industry.companies, Skellerup
Agriculture, business.industry.companies, Golden State Foods
Agriculture, people.professional_field.professions_in_this_field, Farmer
m.04hzczj, organization.organization_board_membership.organization, National FFA Organization
National FFA Organization, organization.organization.headquarters, m.0wkkztl
m.05t5nmn, common.webpage.resource, m.0bkncn2
Agriculture, business.industry.companies, International Harvester
Alexandria, location.location.containedby, United States of America
m.0wkkztl, common.topic.notable_types, Location
Virginia, location.location.containedby, United States of America
Nonprofit organization, type.type.expected_by, Non-profit organization
Organization, freebase.type_profile.strict_included_types, Topic
Agriculture, base.descriptive_names.names.descriptive_name, m.01062tz2
Agriculture, business.industry.companies, Heritage Foods
Agriculture, education.field_of_study.students_majoring, m.0w1772l
Agriculture, base.descriptive_names.names.descriptive_name, m.0106mmn2
Agriculture, business.industry.companies, Manuelita
m.0bkncn2, common.resource.annotations, m.05t5nmn
Science Citation Index Expanded, base.database.database.topic_s, Agriculture
Agriculture, base.descriptive_names.names.descriptive_name, m.010nl_gc

Answer: Alexandria