Optical coherence tomography
https://openalex.org/C2778818243
https://www.wikidata.org/wiki/Q899552
Optics
https://openalex.org/C120665830
https://www.wikidata.org/wiki/Q14620
Interferometry
https://openalex.org/C166689943
https://www.wikidata.org/wiki/Q850283
Tomography
https://openalex.org/C163716698
https://www.wikidata.org/wiki/Q841267
Coherence (philosophical gambling strategy)
https://openalex.org/C2781181686
https://www.wikidata.org/wiki/Q4226068
Tomographic reconstruction
https://openalex.org/C97742081
https://www.wikidata.org/wiki/Q7820109
Materials science
https://openalex.org/C192562407
https://www.wikidata.org/wiki/Q228736
Physics
https://openalex.org/C121332964
https://www.wikidata.org/wiki/Q413
Identifying a controversy within the field of study
A much-debated question is whether …
[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: "Optics".
Paper: "Metamaterial Electromagnetic Cloak at Microwave Frequencies"
Function: "Identifying a controversy within the field of study".
Example Sentence: "A much-debated question is whether …". [/INST]