Medulloblastoma
https://openalex.org/C2780789225
https://www.wikidata.org/wiki/Q1333608
Pathology
https://openalex.org/C142724271
https://www.wikidata.org/wiki/Q7208
Grading (engineering)
https://openalex.org/C2777286243
https://www.wikidata.org/wiki/Q5591926
Biology
https://openalex.org/C86803240
https://www.wikidata.org/wiki/Q420
Central nervous system
https://openalex.org/C529278444
https://www.wikidata.org/wiki/Q47273
Medicine
https://openalex.org/C71924100
https://www.wikidata.org/wiki/Q11190
Noting the lack of or paucity of previous research
There is little published information on …
[INST] Please produce a sentence from the paper. The sentence should not mention the title of the paper, rather it be extracted from the Introducing Work section of the paper.
Please provide one singular full sentence from the paper that serves the function provided, using the example as guidance. Be specific, using relevant terminology from the paper.
Refrain from vague or generic statements. Finally produce a search query in the form of a question targeted towards the knowledge contained therein. 
You must output json with the structure of {'Sentence': sentence, 'Query': query}.
Field: "Pathology".
Paper: "The 2007 WHO Classification of Tumours of the Central Nervous System"
Function: "Noting the lack of or paucity of previous research".
Example Sentence: "There is little published information on …". [/INST]