Update README.md

README.md

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 ### Dataset Summary
 
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+This is the dataset card for the Hungarian Corpus for Reading Comprehension with Commonsense Reasoning (HuRC), which is also part of the Hungarian Language Understanding Evaluation Benchmark Kit HuLU.
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+The dataset contains 80 614 instances. Each instance is composed of a lead, a passage and a cloze-style query with a masked entity. The task is to select the named entity that is being masked in the query.
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+The data was collected from the online news of Népszabadság online (nol.hu).
 
 ### Languages
 
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+The BCP-47 code for Hungarian, the only represented language in this dataset, is hu-HU. 
 
 ## Dataset Structure
 
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 ### Data Fields
 
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+- id: unique id of the instances;
+- lead: a short summary of the article as it was extracted from the source texts;
+- passage: 3-6 paragraphs of texts as the body of the article;
+- query: the last paragraph of an article, some kind of summary or conclusion, with a named entity masked (with [MASK]) in it;
+- MASK: the masked named entity. 
 
 ### Data Splits