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: When was the inauguration of the president who appointed an ambassador to Lesotho? 
Knowledge Triplets: Washington, D.C., location.location.events, Ronald Reagan 1981 presidential inauguration
Office, position, or title, rdf-schema#range, Government Office or Title
United States Ambassador to Lesotho, common.topic.image, June Carter Perry
Office, position, or title, type.property.expected_type, Government Office or Title
United States Capitol, location.location.events, Ronald Reagan 1981 presidential inauguration
Ronald Reagan, government.political_appointer.appointees, m.0tl6lrw
Ronald Reagan 1981 presidential inauguration, time.event.locations, Washington, D.C.
Ronald Reagan 1981 presidential inauguration, base.inaugurations.inauguration.president, Ronald Reagan
Michele Thoren Bond ambassador, common.image.size, m.02d3p6n
Ronald Reagan 1985 presidential inauguration, time.event.locations, White House
United States Ambassador to Lesotho, government.government_office_or_title.office_holders, m.0tl6mf5
m.0tl6mf5, government.government_position_held.office_position_or_title, United States Ambassador to Lesotho
United States Ambassador to Lesotho, common.topic.notable_types, Government Office or Title
Ronald Reagan, base.inaugurations.inauguration.president, Ronald Reagan 1985 presidential inauguration
Government Office or Title, type.type.expected_by, Title of Chief Executive
m.0tl6mf5, government.government_position_held.office_holder, Robert B. Nolan
White House, location.location.events, Ronald Reagan 1985 presidential inauguration
Government Office or Title, type.type.properties, Governmental body (if any)
Ronald Reagan 1985 presidential inauguration, base.culturalevent.event.event_type, Historical event
Government Office or Title, type.type.expected_by, Office, position, or title
Government Office or Title, type.type.domain, Government
Government Office or Title, type.type.expected_by, Government positions
m.0tl6lrw, government.government_position_held.office_holder, Shirley Abbott
Ronald Reagan, base.inaugurations.inauguration_speaker.inauguration, Ronald Reagan 1981 presidential inauguration
Ronald Reagan 1981 presidential inauguration, time.event.instance_of_recurring_event, United States presidential inauguration
m.05c1r_h, dataworld.gardening_hint.replaced_by, Ronald Reagan 1981 presidential inauguration
m.05c0rxl, dataworld.gardening_hint.replaced_by, Ronald Reagan 1985 presidential inauguration
Ronald Reagan 1981 presidential inauguration, time.event.start_date, 1981-01-20
Office, position, or title, type.property.reverse_property, Office Holders
m.0gx7951, common.webpage.topic, United States Ambassador to Lesotho
Ronald Reagan 1981 presidential inauguration, time.event.locations, United States Capitol
Ronald Reagan 1981 presidential inauguration, base.culturalevent.event.event_type, Historical event
Ronald Reagan, base.inaugurations.inauguration_speaker.inauguration, Ronald Reagan 1985 presidential inauguration
June Carter Perry, common.image.size, m.0kjlb9
Ronald Reagan 1981 presidential inauguration, time.event.end_date, 1981-01-20
Government Office or Title, type.type.properties, Category
m.0tl6lrw, government.government_position_held.basic_title, Ambassador
Ronald Reagan 1985 presidential inauguration, base.inaugurations.inauguration.inaugural_address, Second Inaugural Address of Ronald Reagan
m.0tl6lrw, government.government_position_held.appointed_by, Ronald Reagan
m.0tl6lrw, government.political_appointer.appointees, Ronald Reagan
m.0ggd227, common.webpage.topic, United States Ambassador to Lesotho
United States Ambassador to Lesotho, common.topic.notable_for, g.125618_71
Government Office or Title, freebase.type_profile.strict_included_types, Non-Agent
Government Office or Title, freebase.type_profile.kind, Definition
United States Ambassador to Lesotho, common.topic.image, Michele Thoren Bond ambassador
United States Ambassador to Lesotho, common.topic.webpage, m.0ggd227
United States presidential inauguration, time.recurring_event.instances, Ronald Reagan 1985 presidential inauguration
First Inaugural address of Ronald Reagan, base.inaugurations.inaugural_speech.inauguration, Ronald Reagan 1981 presidential inauguration
Shirley Abbott, government.politician.government_positions_held, m.0tl6lrw
United States Department of State, government.governmental_body.members, m.0tl6lrw
Government Office or Title, freebase.type_profile.published, Published
Robert B. Nolan, government.politician.government_positions_held, m.0tl6mf5
Government Office or Title, common.topic.article, m.02xlj1v
Government Office or Title, type.type.expected_by, Offices/Positions Within the Body
Government Office or Title, freebase.type_profile.strict_included_types, Abstract
Washington, D.C., location.location.events, Ronald Reagan 1985 presidential inauguration
Topic, freebase.type_profile.published, Published
Ambassador, government.government_office_category.officeholders, m.0tl6lrw
Government Office or Title, type.type.expected_by, Offices
Government Office or Title, type.type.properties, Jurisdiction
Ronald Reagan 1985 presidential inauguration, time.event.locations, United States Capitol
Michele Thoren Bond ambassador, common.image.appears_in_topic_gallery, United States Ambassador to Lesotho
Ronald Reagan 1985 presidential inauguration, time.event.instance_of_recurring_event, United States presidential inauguration
Government Office or Title, type.type.properties, Office Holders
Government Office or Title, freebase.type_profile.strict_included_types, Topic
Second Inaugural Address of Ronald Reagan, base.inaugurations.inaugural_speech.inauguration, Ronald Reagan 1985 presidential inauguration
Ronald Reagan, base.inaugurations.inauguration.president, Ronald Reagan 1981 presidential inauguration
Ronald Reagan, symbols.name_source.namesakes, Ronald Reagan 1981 presidential inauguration
United States Capitol, location.location.events, Ronald Reagan 1985 presidential inauguration
United States Ambassador to Lesotho, common.topic.webpage, m.0gx7951
United States Ambassador to Lesotho, government.government_office_or_title.office_holders, m.0tl6lrw
Ronald Reagan 1985 presidential inauguration, time.event.end_date, 1985-01-21
Government Office or Title, type.type.expected_by, Office
Government Office or Title, type.type.expected_by, Office, Position, or Title
Ronald Reagan 1981 presidential inauguration, base.culturalevent.event.entity_involved, Ronald Reagan
Ronald Reagan 1981 presidential inauguration, base.inaugurations.inauguration.inaugural_address, First Inaugural address of Ronald Reagan
United States presidential inauguration, time.recurring_event.instances, Ronald Reagan 1981 presidential inauguration
Government Office or Title, freebase.type_hints.included_types, Topic
Ronald Reagan 1985 presidential inauguration, time.event.start_date, 1985-01-20
m.0tl6lrw, government.government_position_held.office_position_or_title, United States Ambassador to Lesotho
United States Ambassador to Lesotho, government.government_office_or_title.office_holders, m.0tl6lrw
m.0n5qh2k, dataworld.gardening_hint.last_referenced_by, Ronald Reagan 1981 presidential inauguration
June Carter Perry, common.image.appears_in_topic_gallery, United States Ambassador to Lesotho
Ronald Reagan 1985 presidential inauguration, time.event.locations, Washington, D.C.
Ronald Reagan 1985 presidential inauguration, base.culturalevent.event.entity_involved, Ronald Reagan
Office, position, or title, owl#inverseOf, Office Holders
m.0tl6lrw, government.government_position_held.governmental_body, United States Department of State
Ronald Reagan 1981 presidential inauguration, symbols.namesake.named_after, Ronald Reagan
Ronald Reagan 1985 presidential inauguration, base.inaugurations.inauguration.president, Ronald Reagan
United States Ambassador to Lesotho, common.topic.article, m.027c0bh

Answer: Ronald Reagan 1981 presidential inauguration
Ronald Reagan 1985 presidential inauguration