Here are the identified issues in the dataset according to the provided hint about missing language tags in the markdown file:

### Issue 1
```json
{
    "issue": "Missing language tags in code blocks",
    "evidence": "```[More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)```",
    "description": "The markdown file contains several placeholders such as '[More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)' which should be in code blocks with appropriate language tags."
}
```

### Issue 2
```json
{
    "issue": "Missing language tags for YAML front matter",
    "evidence": "---\nannotations_creators:\n- other\nlanguage:\n- ar\n- bg\n- en\n- es\n- ro\nlanguage_creators:\n- found\nlicense:\n- unknown\nmultilinguality:\n- multilingual\npretty_name: \"QA4MRE: Question Answering for Machine Reading Evaluation\"\nsize_categories:\n- 1K<n<10K\nsource_datasets:\n- original\ntask_categories:\n- multiple-choice\ntask_ids:\n- multiple-choice-qa\npaperswithcode_id: null\n---",
    "description": "The YAML front matter block at the beginning of the README file is missing a language tag specifying that it is YAML. Adding 'yaml' after the opening triple dashes '---' will correct this."
}
```

### Issue 3
```json
{
    "issue": "Missing language tags in citation block",
    "evidence": "```\n@InProceedings{10.1007/978-3-642-40802-1_29,\nauthor=\"Pe{\\~{n}}as, Anselmo\nand Hovy, Eduard\nand Forner, Pamela\nand Rodrigo, {\\'A}lvaro\nand Sutcliffe, Richard\nand Morante, Roser\",\neditor=\"Forner, Pamela\nand M{\\\"u}ller, Henning\nand Paredes, Roberto\nand Rosso, Paolo\nand Stein, Benno\",\ntitle=\"QA4MRE 2011-2013: Overview of Question Answering for Machine Reading Evaluation\",\nbooktitle=\"Information Access Evaluation. Multilinguality, Multimodality, and Visualization\",\nyear=\"2013\",\npublisher=\"Springer Berlin Heidelberg\",\naddress=\"Berlin, Heidelberg\",\npages=\"303--320\",\nisbn=\"978-3-642-40802-1\"\n}\n```",
    "description": "The citation block towards the end of the README file should include a language tag, such as 'bibtex', to enhance readability and proper formatting."
}
```

These issues highlight missing language tags in various sections of the markdown file that could improve the readability and proper rendering of the content.