Medicine
https://openalex.org/C71924100
https://www.wikidata.org/wiki/Q11190
Obstetrics
https://openalex.org/C131872663
https://www.wikidata.org/wiki/Q5284418
Preterm delivery
https://openalex.org/C3017786699
https://www.wikidata.org/wiki/Q625506
Gestation
https://openalex.org/C46973012
https://www.wikidata.org/wiki/Q28627
Preterm labor
https://openalex.org/C3019152611
https://www.wikidata.org/wiki/Q625506
Pregnancy
https://openalex.org/C2779234561
https://www.wikidata.org/wiki/Q11995
Fetus
https://openalex.org/C172680121
https://www.wikidata.org/wiki/Q26513
Gestational age
https://openalex.org/C2778376644
https://www.wikidata.org/wiki/Q2253111
Cesarean delivery
https://openalex.org/C3020128735
https://www.wikidata.org/wiki/Q228036
Pediatrics
https://openalex.org/C187212893
https://www.wikidata.org/wiki/Q123028
Previous research: highlighting negative outcomes
Previous studies have failed to show any significant differences in …
[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: "Obstetrics".
Paper: "UK multicentre project on assessment of risk of trisomy 21 by maternal age and fetal nuchal-translucency thickness at 10–14 weeks of gestation"
Function: "Previous research: highlighting negative outcomes".
Example Sentence: "Previous studies have failed to show any significant differences in …". [/INST]