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: What type of government is in the country whose major exports are from fruit and nut tree farming? 
Knowledge Triplets: Islamic republic, government.form_of_government.countries, Mauritania
Cotton Farming, business.industry.parent_industry, Crop Production
Crop Production, business.industry.child_industry, Ornamental Floriculture and Nursery
Noncitrus Fruit and Tree Nut Farming, common.topic.notable_for, g.1255pjsq0
Industry, type.type.expected_by, Related Industries
Orange Groves, business.industry.child_industry, Citrus Fruits (orange groves and farms)
Crop Production, business.industry.child_industry, Deciduous Tree Fruits
Noncitrus Fruit and Tree Nut Farming, business.industry.child_industry, Strawberry Farming
m.0r2v41p, dataworld.gardening_hint.last_referenced_by, Islamic republic
Crop Production, business.industry.child_industry, Vegetable and Melon Farming
Fruit and Tree Nut Farming, business.industry.parent_industry, Crop Production
Islamic republic, government.form_of_government.countries, Iran
Noncitrus Fruit and Tree Nut Farming, business.industry.parent_industry, Fruit and Tree Nut Farming
Crop Production, business.industry.child_industry, Oilseed and Grain Farming
Industry, type.type.expected_by, Intended Use
Industry, type.type.domain, Business
Fruit and Tree Nut Farming, business.industry.child_industry, Citrus (except Orange) Groves
Crop Production, business.industry.parent_industry, Agriculture, Forestry, Fishing and Hunting
Crop Production, business.industry.child_industry, Fruits and Tree Nuts, NEC
Industry, type.type.expected_by, Ecommerce HVAC
Industry, freebase.type_hints.included_types, Topic
Business, type.domain.types, Industry
Cotton Farming, business.industry.parent_industry, Other Crop Farming
Iran, location.country.form_of_government, Islamic republic
Crop Production, business.industry.child_industry, Wheat Farming
Orange Groves, common.topic.notable_types, Industry
Noncitrus Fruit and Tree Nut Farming, business.industry.child_industry, Apple Orchards
Fruit and Tree Nut Farming, business.industry.child_industry, Noncitrus Fruit and Tree Nut Farming
Islamic republic, user.avh.default_domain.ellerdale_topic.ellerdale_id, 0081-6544
Islamic State of Afghanistan, location.country.form_of_government, Islamic republic
Crop Production, business.industry.child_industry, Soybean Farming
Agriculture, Forestry, Fishing and Hunting, common.topic.notable_types, Industry
Islamic republic, government.form_of_government.countries, Afghanistan
Crop Production, business.industry.child_industry, Citrus Fruits
Noncitrus Fruit and Tree Nut Farming, common.topic.notable_types, Industry
Crop Production, business.industry.child_industry, Cash Grains, NEC
Industry, type.type.expected_by, Industry
Industry, type.type.properties, Trade unions
Crop Production, business.industry.child_industry, Cotton Farming
Industry, type.type.properties, Parent Industry
Citrus (except Orange) Groves, business.industry.child_industry, Citrus (except Orange) Groves
Crop Production, business.industry.companies, Griffin Land & Nurseries, Inc.
Chiquita Brands International, business.business_operation.industry, Crop Production
Noncitrus Fruit and Tree Nut Farming, business.industry.child_industry, Fruit and Tree Nut Combination Farming
Wheat Farming, business.industry.parent_industry, Crop Production
Industry, freebase.type_profile.strict_included_types, Topic
Cotton Farming, common.topic.notable_types, Industry
Topic, freebase.type_profile.published, Published
Crop Production, business.industry.child_industry, Food Crops Grown Under Cover
Industry, type.type.expected_by, Engineering service industries
NAICS 2007 code, rdf-schema#domain, Industry
First East Turkestan Republic, location.country.form_of_government, Islamic republic
Crop Production, business.industry.companies, Chiquita Brands International
Crop Production, common.topic.notable_for, g.125cdb_pt
Crop Production, business.industry.child_industry, Other Crop Farming
Islamic republic, government.form_of_government.countries, Islamic State of Afghanistan
Industry, type.type.expected_by, Child Industry
Industry, freebase.type_profile.kind, Definition
Orange Groves, common.topic.notable_for, g.125cy8pr9
Citrus (except Orange) Groves, common.topic.notable_for, g.125d3_vbq
Crop Production, business.industry.child_industry, Berry Crops
Citrus (except Orange) Groves, business.industry.child_industry, Citrus Fruits (except orange groves and farms)
Islamic republic, base.schemastaging.context_name.pronunciation, g.125_pty39
Noncitrus Fruit and Tree Nut Farming, business.industry.child_industry, Grape Vineyards
Noncitrus Fruit and Tree Nut Farming, business.industry.child_industry, Tree Nut Farming
Islamic republic, government.form_of_government.countries, First East Turkestan Republic
Afghanistan, location.country.form_of_government, Islamic republic
Agriculture, Forestry, Fishing and Hunting, business.industry.child_industry, Crop Production
Industry, freebase.documented_object.documentation, m.021lqvd
Fruit and Tree Nut Farming, common.topic.notable_types, Industry
Griffin Land & Nurseries, Inc., business.business_operation.industry, Crop Production
Citrus (except Orange) Groves, common.topic.notable_types, Industry
Fruit and Tree Nut Farming, common.topic.notable_for, g.12586wyfm
NAICS 2007 code, type.property.schema, Industry
Crop Production, business.industry.child_industry, Rice Farming
Crop Production, business.industry.child_industry, Grape Vineyards
Mauritania, location.country.form_of_government, Islamic republic
Industry, type.type.properties, Organizations in this industry
Wheat Farming, business.industry.parent_industry, Oilseed and Grain Farming
Crop Production, business.industry.child_industry, Fruit and Tree Nut Farming
Wheat Farming, common.topic.notable_types, Industry
Industry, type.type.expected_by, Industries
Orange Groves, business.industry.child_industry, Orange Groves
Crop Production, business.industry.child_industry, Tobacco Farming
Fruit and Tree Nut Farming, business.industry.child_industry, Orange Groves
Industry, type.type.properties, NAICS 2007 code
Crop Production, business.industry.child_industry, Potato Farming
Crop Production, business.industry.child_industry, Field Crops, Except Cash Grains, NEC
Industry, freebase.type_profile.published, Published
Industry, type.type.expected_by, Industries of interest
Crop Production, business.industry.child_industry, Greenhouse, Nursery, and Floriculture Production
Industry, type.type.expected_by, Parent Industry
Crop Production, business.industry.child_industry, Sugarcane and Sugar Beets
Industry, type.type.properties, Child Industry
Industry, type.type.expected_by, industry
Crop Production, business.industry.child_industry, Tree Nut Farming
Citrus (except Orange) Groves, business.industry.parent_industry, Fruit and Tree Nut Farming
Crop Production, common.topic.notable_types, Industry
Noncitrus Fruit and Tree Nut Farming, business.industry.child_industry, Other Noncitrus Fruit Farming
Crop Production, business.industry.companies, Royal Hawaiian Orchards Lp
Industry, common.topic.article, m.021lqvd
Noncitrus Fruit and Tree Nut Farming, business.industry.child_industry, Berry (except Strawberry) Farming
Industry, freebase.type_profile.equivalent_topic, Industry
Orange Groves, business.industry.parent_industry, Fruit and Tree Nut Farming

Answer: Islamic republic