NMDA receptor
https://openalex.org/C67018056
https://www.wikidata.org/wiki/Q414896
Biophysics
https://openalex.org/C12554922
https://www.wikidata.org/wiki/Q7100
Excitatory postsynaptic potential
https://openalex.org/C112592302
https://www.wikidata.org/wiki/Q1207387
Glutamate receptor
https://openalex.org/C61174792
https://www.wikidata.org/wiki/Q420510
Chemistry
https://openalex.org/C185592680
https://www.wikidata.org/wiki/Q2329
Voltage clamp
https://openalex.org/C100837961
https://www.wikidata.org/wiki/Q10290897
Patch clamp
https://openalex.org/C147944092
https://www.wikidata.org/wiki/Q176366
Agonist
https://openalex.org/C2778938600
https://www.wikidata.org/wiki/Q389934
Ion channel
https://openalex.org/C50254741
https://www.wikidata.org/wiki/Q62536
Neuroscience
https://openalex.org/C169760540
https://www.wikidata.org/wiki/Q207011
Aspartic acid
https://openalex.org/C2781208047
https://www.wikidata.org/wiki/Q178450
Receptor
https://openalex.org/C170493617
https://www.wikidata.org/wiki/Q208467
Membrane potential
https://openalex.org/C181911157
https://www.wikidata.org/wiki/Q389844
Amino acid
https://openalex.org/C515207424
https://www.wikidata.org/wiki/Q8066
Contrasting sources with ‘however’ for emphasis
According to some studies, X is represented as
… (Smith, 2012; Davis, 2014). However, others propose … (Jones, 2014; Brown, 
2015)
[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: "Biophysics".
Paper: "Voltage-dependent block by Mg2+ of NMDA responses in spinal cord neurones"
Function: "Contrasting sources with ‘however’ for emphasis".
Example Sentence: "According to some studies, X is represented as
… (Smith, 2012; Davis, 2014). However, others propose … (Jones, 2014; Brown, 
2015)". [/INST]