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 subject does the radio afield with ranger mac cover? 
Knowledge Triplets: The Call of the Wild, book.written_work.subjects, Nature
Nature, book.book_subject.works, Animals in translation
A Splintered History of Wood, book.written_work.subjects, Nature
Nature never says one thing and wisdom another., media_common.quotation.subjects, Nature
Educational Radio, broadcast.genre.content, Man's Right to Knowledge
Afield with Ranger Mac, broadcast.content.summary, Children's Radio programming
Educational Radio, broadcast.genre.content, Afield with Ranger Mac
Afield with Ranger Mac, radio.radio_program.subjects, Nature
Nature, book.book_subject.works, The Call of the Wild
English Language, book.book_subject.works, A Tale of Two Cities
English Language, book.book_subject.works, Island of the Blue Dolphins
English Language, book.book_subject.works, Sense and Sensibility
Nature, book.book_subject.works, Last Child in the Woods
Afield with Ranger Mac, radio.radio_subject.programs_with_this_subject, Nature
English Language, book.book_subject.works, CliffsAP English Language and Composition
Nature, book.book_subject.works, The World Without Us
The Atmosphere, book.written_work.subjects, Nature
In nature nothing can be given. All things are sold., media_common.quotation.subjects, Nature
Nature, book.book_subject.works, The Atmosphere
Educational Radio, broadcast.genre.content, Higher Horizons
Higher Horizons, broadcast.content.genre, Educational Radio
Educational Radio, broadcast.genre.content, The Jeffersonian World of Dumas Malone
Afield with Ranger Mac, user.zsi_editorial.editorial.topic.comments, ZSI on Afield with Ranger Mac
Nature, book.book_subject.works, The Nature of Vermont : Introduction and Guide to a New England Environment
English Language, book.book_subject.works, Reading Lolita in Tehran: A Memoir in Books
English Language, book.book_subject.works, One Flew Over the Cuckoo's Nest
Nature, like man, sometimes weeps from gladness., media_common.quotation.subjects, Nature
English Language, book.book_subject.works, Teach Your Child to Read in 100 Easy Lessons
Everything in Nature contains all the powers of Nature. Everything is made of hidden stuff., media_common.quotation.subjects, Nature
Nature, book.book_subject.works, Between Home and Heaven: Contemporary American Landscape Photography
I believe a leaf of grass is no less than the journey-work of the stars., media_common.quotation.subjects, Nature
She seemed a thing that could not feel the touch of earthly years., media_common.quotation.subjects, Nature
The Nature of Vermont : Introduction and Guide to a New England Environment, book.written_work.subjects, Nature
Nature, book.book_subject.works, The Botany of Desire: A Plant's-Eye View of the World
Nature is a good name for an effect whose cause is God., media_common.quotation.subjects, Nature
Madison, location.location.nearby_airports, Dane County Regional Airport
English Language, book.book_subject.works, The Prodigal Tongue: Dispatches from the Future of English
Afield with Ranger Mac, broadcast.content.location, Madison
English Language, book.book_subject.works, The Truth About Chuck Norris
Natural Wonders of Vermont : A Guide to Parks, Preserves and Wild Places, book.written_work.subjects, Nature
Educational Radio, broadcast.genre.content, The American Past
English Language, book.book_subject.works, Righting the Mother Tongue: From Olde English to Email, the Tangled Story of English Spelling
Educational Radio, broadcast.genre.content, Science Story
Desert Solitaire, book.written_work.subjects, Nature
We fly to beauty as an asylum from the terrors of finite nature., media_common.quotation.subjects, Nature
Nature, book.book_subject.works, Desert Solitaire
Children's radio series, broadcast.genre.content, Afield with Ranger Mac
English Language, book.book_subject.works, The awakening, and other stories
Madison, location.hud_foreclosure_area.total_residential_addresses, m.07cpvb8
English Language, book.book_subject.works, The Sea, the Sea
Nature in America has always been suspect, on the defensive, cannibalized by progress. In America, every specimen becomes a relic., media_common.quotation.subjects, Nature
Nature, book.book_subject.works, Salt
Madison, location.hud_foreclosure_area.total_90_day_vacant_residential_addresses, m.07cpvb1
Wakelin McNeel, broadcast.artist.content, Afield with Ranger Mac
The American Past, broadcast.content.genre, Educational Radio
Nature, book.book_subject.works, Natural Disasters
We March with Faith, broadcast.content.genre, Educational Radio
English Language, book.book_subject.works, Doing Our Own Thing: The Degradation of Language and Music and Why We Should, Like, Care
Nature, like us is sometimes caught without her diadem., media_common.quotation.subjects, Nature
m.05snf2y, award.award_honor.honored_for, Afield with Ranger Mac
Educational Radio, broadcast.genre.content, You Are the Jury
Nature, book.book_subject.works, A Splintered History of Wood
Afield with Ranger Mac, broadcast.content.production_start, 1933-01
Educational Radio, broadcast.genre.content, Conversations with Will Shakespeare and Certain of His Friends
English Language, book.book_subject.works, Fahrenheit 451
Postcards from Mr. Pish, book.written_work.subjects, Nature
Dish with "rustic figulines", visual_art.artwork.art_subject, Nature
A Sand County Almanac: And Sketches Here and There, book.written_work.subjects, Nature
Careers Unlimited, broadcast.content.genre, Educational Radio
Our task is not to rediscover nature but to remake it., media_common.quotation.subjects, Nature
Taylor Made Piano: A Jazz History, broadcast.content.genre, Educational Radio
Nature, book.book_subject.works, The Backyard Birdsong Guide
Bird Songs: 250 North American Birds in Song, book.written_work.subjects, Nature
Human Adventure, broadcast.content.genre, Educational Radio
Nature, film.film_subject.films, Internet Rising
Elements and Unknowns, exhibitions.exhibition.subjects, Nature
Educational Radio, broadcast.genre.content, Human Adventure
Nature, book.book_subject.works, The Stray Shopping Carts of Eastern North America: A Guide to Field Identification
“Something is going on everywhere, most of which no one understands.”, media_common.quotation.subjects, Nature
English Language, book.book_subject.works, The Souls of Black Folk
Educational Radio, broadcast.genre.content, We March with Faith
A man is related to all nature., media_common.quotation.subjects, Nature
English Language, book.book_subject.works, Emma
Children's radio series, broadcast.genre.content, Jungle Jam and Friends: The Radio Show!
Nature, film.film_subject.films, Way of Nature
Afield with Ranger Mac, broadcast.content.artist, Wakelin McNeel
Educational Radio, broadcast.genre.content, Taylor Made Piano: A Jazz History
English Language, book.book_subject.works, The Diary of a Young Girl
English Language, book.book_subject.works, The Piano Teacher
Children's radio series, broadcast.genre.content, Let's Pretend
Nuclear Snow in Japanese Springtime An Editorial Poem-Commentary, book.written_work.subjects, Nature
The law cannot equalize mankind in spite of nature., media_common.quotation.subjects, Nature
English Language, book.book_subject.works, The Mother Tongue: English and How It Got That Way
To sit in the shade on a fine day, and look upon verdure is the most perfect refreshment., media_common.quotation.subjects, Nature
English Language, book.book_subject.works, The Cambridge Grammar of the English Language
English Language, book.book_subject.works, A Room with a View
Afield with Ranger Mac, award.award_winning_work.awards_won, m.05snf2y
English Language, book.book_subject.works, Words and Things: An Introduction to Language
English Language, book.book_subject.works, Brave New World
Afield with Ranger Mac, broadcast.content.genre, Educational Radio
English Language, book.book_subject.works, The American Heritage Dictionary of the English Language
Afield with Ranger Mac, radio.radio_subject.programs_with_this_subject, Conservation
Planet Earth, book.written_work.subjects, Nature
"What wastrel mankind destroyed takes time for nature to put to rights.", media_common.quotation.subjects, Nature
English Language, book.book_subject.works, The Dictionary of Disagreeable English: A Curmudgeon's Compendium of Excruciatingly Correct Grammar
Conversations with Will Shakespeare and Certain of His Friends, broadcast.content.genre, Educational Radio
Nature goes her own way and all that to us seems an exception is really according to order., media_common.quotation.subjects, Nature
Educational Radio, broadcast.genre.content, The Noise Show
Nature, book.book_subject.works, American Buffalo
The environment is everything that isn't me., media_common.quotation.subjects, Nature
The Swiss Family Robinson, book.written_work.subjects, Nature
Nothing walks the earth more savage than a mare enraged., media_common.quotation.subjects, Nature
The subtlety of nature is greater many times over than the subtlety of the senses and understanding., media_common.quotation.subjects, Nature
English Language, book.book_subject.works, Atonement
Nature, book.book_subject.works, Natural Wonders of Vermont : A Guide to Parks, Preserves and Wild Places
Educational Radio, broadcast.genre.content, Paris: From Oscar Wilde to Jim Morrison
All men by nature desire to know., media_common.quotation.subjects, Nature
You may drive out nature with a pitchfork, yet she'll be constantly running back., media_common.quotation.subjects, Nature
Conservation, radio.radio_subject.programs_with_this_subject, Afield with Ranger Mac
English Language, book.book_subject.works, Cry, the Beloved Country
We March with Faith, broadcast.content.genre, Children's radio series
Nature is the art of God., media_common.quotation.subjects, Nature
English Language, book.book_subject.works, Microsoft Encarta College Dictionary: The First Dictionary For The Internet Age
Man's Right to Knowledge, broadcast.content.genre, Educational Radio
English Language, book.book_subject.works, The Yellow Wallpaper
The sun will set without thy assistance., media_common.quotation.subjects, Nature
The Backyard Birdsong Guide, book.written_work.subjects, Nature
Disease is the retribution of outraged Nature., media_common.quotation.subjects, Nature
English Language, book.book_subject.works, The use of English
Nature, book.book_subject.works, The Birds of Costa Rica
English Language, book.book_subject.works, The Stories of English
Educational Radio, broadcast.genre.content, U.N. in Action
Nature, book.book_subject.works, A Sand County Almanac: And Sketches Here and There
National Geographic Field Guide to the Birds of North America, Fifth Edition, book.written_work.subjects, Nature
Nature, book.book_subject.works, Happy thoughts on a sunny day in New York City
Nature breaks through the eyes of the cat., media_common.quotation.subjects, Nature
Paris: From Oscar Wilde to Jim Morrison, broadcast.content.genre, Educational Radio
Nature, book.book_subject.works, NightWatch
Through the Looking Glass, broadcast.content.genre, Educational Radio
Madison, location.hud_foreclosure_area.estimated_number_of_mortgages, m.07cpv9t
English Language, book.book_subject.works, Dos mundos Student Edition with Online Learning Center Bind-in Passcode
I am at two with nature., media_common.quotation.subjects, Nature
Teenage Book Talk, broadcast.content.genre, Educational Radio
Natural Disasters, book.written_work.subjects, Nature
English Language, book.book_subject.works, Roget's Thesaurus
English Language, book.book_subject.works, A Christmas Carol
Nature is garrulous to the point of confusion, let the artist be truly taciturn., media_common.quotation.subjects, Nature
English Language, book.book_subject.works, By Hook or by Crook: A Journey in Search of English
Nature never did betray the heart that loved her., media_common.quotation.subjects, Nature
English Language, book.book_subject.works, To the Lighthouse
Nature, book.book_subject.works, Fully Empowered
Nature is a mutable cloud which is always and never the same., media_common.quotation.subjects, Nature
Two things fill the mind with ever new and increasing admiration and awe..., media_common.quotation.subjects, Nature
U.N. in Action, broadcast.content.genre, Educational Radio
English Language, book.book_subject.works, Heart of Darkness
Birds of Peru, book.written_work.subjects, Nature
Easy as ABC, broadcast.content.genre, Educational Radio
Educational Radio, broadcast.genre.content, Easy as ABC
Afield with Ranger Mac, radio.radio_program.first_broadcast, 1933-01
Men have an extraordinarily erroneous opinion of their position in nature; and the error is ineradicable., media_common.quotation.subjects, Nature
The Jeffersonian World of Dumas Malone, broadcast.content.genre, Educational Radio
Fully Empowered, book.written_work.subjects, Nature
Nature provides exceptions to every rule., media_common.quotation.subjects, Nature
The Reader's Almanac, broadcast.content.genre, Educational Radio
English Language, book.book_subject.works, Knight of the Woods
Nature has made up her mind that what cannot defend itself shall not be defended., media_common.quotation.subjects, Nature
The sky is the part of creation in which nature has done for the sake of pleasing man., media_common.quotation.subjects, Nature
ZSI on Afield with Ranger Mac, user.zsi_editorial.editorial.comment.target, Afield with Ranger Mac
Animals in translation, book.written_work.subjects, Nature
Nature, film.film_subject.films, Rainforest 3D
The Meadow, book.written_work.subjects, Nature
Nature uses human imagination to lift her work of creation to even higher levels., media_common.quotation.subjects, Nature
Mr. Pish's Woodland Adventure, book.written_work.subjects, Nature
See one promontory, one mountain, one sea, one river and see all., media_common.quotation.subjects, Nature
English Language, book.book_subject.works, Mrs Dalloway
The rich mind lies in the sun and sleeps, and is Nature., media_common.quotation.subjects, Nature
English Language, book.book_subject.works, Things Fall Apart
Nature... She pardons no mistakes. Her yea is yea, and her nay, nay., media_common.quotation.subjects, Nature
The unnatural, that too is natural., media_common.quotation.subjects, Nature
Nature is commanded by obeying her., media_common.quotation.subjects, Nature
English Language, book.book_subject.works, The Oxford English Dictionary
English Language, book.book_subject.works, Nineteen Eighty-Four
The sun is new every day, media_common.quotation.subjects, Nature
Afield with Ranger Mac, broadcast.content.language, English Language
Nature, book.book_subject.works, Bird Songs: 250 North American Birds in Song
Nature, book.book_subject.works, Smithsonian Handbooks
English Language, book.book_subject.works, The Language of Letting Go
Nature has no principles. She makes no distinction between good and evil., media_common.quotation.subjects, Nature
Henny Penny Playwrighting Contest, broadcast.content.genre, Children's radio series
NightWatch, book.written_work.subjects, Nature
Children's radio series, broadcast.genre.content, We March with Faith
English Language, book.book_subject.works, Reading the OED: One Man, One Year, 21,730 Pages
Nature, radio.radio_subject.programs_with_this_subject, Afield with Ranger Mac
Forget not that the earth delights to feel your bare feet and the winds long to play with your hair., media_common.quotation.subjects, Nature
English Language, book.book_subject.works, I Hope They Serve Beer in Hell
The Stray Shopping Carts of Eastern North America: A Guide to Field Identification, book.written_work.subjects, Nature
To the dull mind all nature is leaden. To the illumined mind the whole world burns and sparkles with light., media_common.quotation.subjects, Nature
Last Child in the Woods, book.written_work.subjects, Nature
Nature, book.book_subject.works, National Geographic Field Guide to the Birds of North America, Fifth Edition
Nature, book.book_subject.works, Postcards from Mr. Pish
Jungle Jam and Friends: The Radio Show!, broadcast.content.genre, Children's radio series
Happy thoughts on a sunny day in New York City, book.written_work.subjects, Nature
Nature, book.book_subject.works, Nature Noir: A Park Ranger's Patrol in the Sierra
Science Story, broadcast.content.genre, Educational Radio
Nature surpasses nurture., media_common.quotation.subjects, Nature
Afield with Ranger Mac, radio.radio_program.subjects, Conservation
Nature Noir: A Park Ranger's Patrol in the Sierra, book.written_work.subjects, Nature
The Birds of Costa Rica, book.written_work.subjects, Nature
Let's Pretend, broadcast.content.genre, Children's radio series
Educational Radio, broadcast.genre.content, Through the Looking Glass
Nature is not human hearted., media_common.quotation.subjects, Nature
Madison, location.hud_foreclosure_area.estimated_number_foreclosures, m.07cpv9j
Way of Nature, film.film.subjects, Nature
English Language, book.book_subject.works, Puntos de partida
American Buffalo, book.written_work.subjects, Nature
English Language, book.book_subject.works, Animal Farm
English Language, book.book_subject.works, Follett's Modern American Usage
Nature, book.book_subject.works, Mr. Pish's Woodland Adventure
Educational Radio, broadcast.genre.content, Kid's Corner
English Language, book.book_subject.works, Words Their Way
The Noise Show, broadcast.content.genre, Educational Radio
Smithsonian Handbooks, book.written_work.subjects, Nature
Nature, book.book_subject.works, The Swiss Family Robinson
Nature... is nothing but the inner voice of self-interest., media_common.quotation.subjects, Nature
English Language, book.book_subject.works, The Da Vinci Code
Nature, book.book_subject.works, Nuclear Snow in Japanese Springtime An Editorial Poem-Commentary
Nature, book.book_subject.works, There Will Come Soft Rains
Nature does nothing uselessly., media_common.quotation.subjects, Nature
English Language, book.book_subject.works, The Early Works of John Dewey, Volume 2: 1887: Psychology
All nature is but art unknown to thee., media_common.quotation.subjects, Nature
The World Without Us, book.written_work.subjects, Nature
Nature, exhibitions.exhibition_subject.exhibitions_created_about_this_subject, Elements and Unknowns
All things are artificial, for nature is the art of God., media_common.quotation.subjects, Nature
Nature, book.book_subject.works, Chasing Science at Sea: Racing Hurricanes, Stalking Sharks, and Living Undersea with Ocean Experts
English Language, book.book_subject.works, A History of the English Language
You Are the Jury, broadcast.content.genre, Educational Radio
Chasing Science at Sea: Racing Hurricanes, Stalking Sharks, and Living Undersea with Ocean Experts, book.written_work.subjects, Nature
There Will Come Soft Rains, book.written_work.subjects, Nature
Afield with Ranger Mac, broadcast.content.genre, Children's radio series
English Language, book.book_subject.works, The King's English: A Guide to Modern Usage
Nature, book.book_subject.works, Birds of Peru
All nature wears one universal grin., media_common.quotation.subjects, Nature
English Language, book.book_subject.works, Pride and Prejudice
English Language, book.book_subject.works, Wise Children
English Language, book.book_subject.works, Middlemarch: A Study of Provincial Life
Between Home and Heaven: Contemporary American Landscape Photography, book.written_work.subjects, Nature
Internet Rising, film.film.subjects, Nature
Rainforest 3D, film.film.subjects, Nature
English Language, book.book_subject.works, The Day the Word "Nigger" Entered My Life
Nature, book.book_subject.works, Planet Earth
English Language, book.book_subject.works, The Things They Carried
Educational Radio, broadcast.genre.content, Teenage Book Talk
English Language, book.book_subject.works, The Devil's Dictionary
Educational Radio, broadcast.genre.content, The Reader's Almanac
Educational Radio, broadcast.genre.content, Careers Unlimited
Nature, book.book_subject.works, The Meadow
Only nature knows how to justly proportion to the fault the punishment it deserves., media_common.quotation.subjects, Nature
Salt, book.written_work.subjects, Nature
If it was true today, it might be untrue tomorrow., media_common.quotation.subjects, Nature
"Nature has a surer plan than mortals can devise.", media_common.quotation.subjects, Nature
Kid's Corner, broadcast.content.genre, Educational Radio
The Botany of Desire: A Plant's-Eye View of the World, book.written_work.subjects, Nature
Children's radio series, broadcast.genre.content, Henny Penny Playwrighting Contest
Let Nature have her way; she understands her business better than we do., media_common.quotation.subjects, Nature
Nature, base.bisac.bisac_subject_heading.equivalent_topic, Nature
Nature, book.book_subject.works, The Old Man Who Does As He Pleases: Selections From The Poetry and Prose of Lu Yu
The Old Man Who Does As He Pleases: Selections From The Poetry and Prose of Lu Yu, book.written_work.subjects, Nature

Answer: Conservation
Nature