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: Which medium is utilized in the topic of the image, View of the Stanza della Segnatura? 
Knowledge Triplets: The School of Athens, visual_art.artwork.art_subject, Ancient Greece
The School of Athens, visual_art.artwork.art_form, Fresco
Raphael, visual_art.visual_artist.art_forms, Painting
Artwork, type.type.properties, Date Begun
Raphael, visual_art.visual_artist.art_series, Stanze di Raffaello Frescoes
The School of Athens, visual_art.artwork.owners, m.0c3kcln
The School of Athens, freebase.valuenotation.has_value, Date Begun
The School of Athens, common.topic.notable_for, g.125b8yt73
View of the Stanza della Segnatura, common.image.appears_in_topic_gallery, The School of Athens
View of the Stanza della Segnatura, common.image.size, m.04s9rg1
The School of Athens, common.topic.image, View of the Stanza della Segnatura
Escola de atenas - vaticano, common.image.appears_in_topic_gallery, The School of Athens
Stanze di Raffaello Frescoes, visual_art.art_series.artworks, The School of Athens
The School of Athens, visual_art.artwork.media, Paint
The School of Athens, visual_art.artwork.locations, m.0c3kbq6
m.0c3kbq6, visual_art.artwork_location_relationship.artwork, The School of Athens
The School of Athens, visual_art.artwork.dimensions_meters, m.0j137bz
The School of Athens, visual_art.visual_art_form.artworks, Fresco
The School of Athens, visual_art.artwork.artist, Raphael
Ancient Greece, visual_art.art_subject.artwork_on_the_subject, The School of Athens
The School of Athens, base.schemastaging.context_name.pronunciation, g.125_n48td
Painting, base.artmetadata.art_form.medium, Paint
The School of Athens, visual_art.artwork.belongs_to_series, Stanze di Raffaello Frescoes
The School of Athens, common.topic.notable_types, Artwork
The School of Athens, visual_art.artwork.art_genre, History painting
Fresco, visual_art.visual_art_form.artworks, The School of Athens
The School of Athens, visual_art.artwork.media, Plaster
m.0c3kcln, visual_art.artwork_owner_relationship.artwork, The School of Athens
The School of Athens, visual_art.artwork.art_form, Painting
The School of Athens, visual_art.artwork.art_form, Painting
Stanze di Raffaello Frescoes, visual_art.art_series.artist, Raphael
The School of Athens, common.topic.image, Escola de atenas - vaticano
Plaster, visual_art.visual_art_medium.artworks, The School of Athens
The School of Athens, common.topic.image, \"The School of Athens\" by Raphael
View of the Stanza della Segnatura, common.image.appears_in_topic_gallery, The School of Athens
The School of Athens, common.topic.article, m.025sm_b

Answer: Fresco
Painting