Update README.md

README.md

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-license: gpl-3.0
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+---
+license: gpl-3.0
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+We have collected a representative sample of patent data from various BRICS countries. 
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+We used a limited interpretation of the BRICS member countries and conducted an analysis of patent activity in the following countries: Brazil, India, China, Russia, and South Africa.
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+As data sources, we used the websites patents.google.com and patentscope.wipo.int. 
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+Since the data in these sources is presented unevenly, we simultaneously used data from different sources to achieve maximum completeness in data collection.
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+For data extraction, we used the search query ```teaching AND education``` to retrieve results from the patents.google.com database. In the case of patents registered with the Indian Patent Office, the search results on patents.google.com did not exceed 200 patents. 
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+Therefore, we conducted an additional search in the patentscope.wipo.int database. 
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+Additionally, the query was supplemented with search conditions in the form of the query ```teach OR pupil OR school OR classroom OR lesson OR education```, where the operator ```OR``` was used to include documents with any of these words in the search results.