Update files from the datasets library (from 1.3.0)

Release notes: https://github.com/huggingface/datasets/releases/tag/1.3.0

README.md

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+---
+---
+
+# Dataset Card for "ai2_arc"
+
+## Table of Contents
+- [Dataset Description](#dataset-description)
+  - [Dataset Summary](#dataset-summary)
+  - [Supported Tasks](#supported-tasks)
+  - [Languages](#languages)
+- [Dataset Structure](#dataset-structure)
+  - [Data Instances](#data-instances)
+  - [Data Fields](#data-fields)
+  - [Data Splits Sample Size](#data-splits-sample-size)
+- [Dataset Creation](#dataset-creation)
+  - [Curation Rationale](#curation-rationale)
+  - [Source Data](#source-data)
+  - [Annotations](#annotations)
+  - [Personal and Sensitive Information](#personal-and-sensitive-information)
+- [Considerations for Using the Data](#considerations-for-using-the-data)
+  - [Social Impact of Dataset](#social-impact-of-dataset)
+  - [Discussion of Biases](#discussion-of-biases)
+  - [Other Known Limitations](#other-known-limitations)
+- [Additional Information](#additional-information)
+  - [Dataset Curators](#dataset-curators)
+  - [Licensing Information](#licensing-information)
+  - [Citation Information](#citation-information)
+  - [Contributions](#contributions)
+
+## [Dataset Description](#dataset-description)
+
+- **Homepage:** [https://allenai.org/data/arc](https://allenai.org/data/arc)
+- **Repository:** [More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
+- **Paper:** [More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
+- **Point of Contact:** [More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
+- **Size of downloaded dataset files:** 1298.60 MB
+- **Size of the generated dataset:** 2.17 MB
+- **Total amount of disk used:** 1300.77 MB
+
+### [Dataset Summary](#dataset-summary)
+
+A new dataset of 7,787 genuine grade-school level, multiple-choice science questions, assembled to encourage research in
+ advanced question-answering. The dataset is partitioned into a Challenge Set and an Easy Set, where the former contains
+ only questions answered incorrectly by both a retrieval-based algorithm and a word co-occurrence algorithm. We are also
+ including a corpus of over 14 million science sentences relevant to the task, and an implementation of three neural baseline models for this dataset. We pose ARC as a challenge to the community.
+
+### [Supported Tasks](#supported-tasks)
+
+[More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
+
+### [Languages](#languages)
+
+[More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
+
+## [Dataset Structure](#dataset-structure)
+
+We show detailed information for up to 5 configurations of the dataset.
+
+### [Data Instances](#data-instances)
+
+#### ARC-Challenge
+
+- **Size of downloaded dataset files:** 649.30 MB
+- **Size of the generated dataset:** 0.79 MB
+- **Total amount of disk used:** 650.09 MB
+
+An example of 'train' looks as follows.
+```
+{
+    "answerKey": "B",
+    "choices": {
+        "label": ["A", "B", "C", "D"],
+        "text": ["Shady areas increased.", "Food sources increased.", "Oxygen levels increased.", "Available water increased."]
+    },
+    "id": "Mercury_SC_405487",
+    "question": "One year, the oak trees in a park began producing more acorns than usual. The next year, the population of chipmunks in the park also increased. Which best explains why there were more chipmunks the next year?"
+}
+```
+
+#### ARC-Easy
+
+- **Size of downloaded dataset files:** 649.30 MB
+- **Size of the generated dataset:** 1.38 MB
+- **Total amount of disk used:** 650.68 MB
+
+An example of 'train' looks as follows.
+```
+{
+    "answerKey": "B",
+    "choices": {
+        "label": ["A", "B", "C", "D"],
+        "text": ["Shady areas increased.", "Food sources increased.", "Oxygen levels increased.", "Available water increased."]
+    },
+    "id": "Mercury_SC_405487",
+    "question": "One year, the oak trees in a park began producing more acorns than usual. The next year, the population of chipmunks in the park also increased. Which best explains why there were more chipmunks the next year?"
+}
+```
+
+### [Data Fields](#data-fields)
+
+The data fields are the same among all splits.
+
+#### ARC-Challenge
+- `id`: a `string` feature.
+- `question`: a `string` feature.
+- `choices`: a dictionary feature containing:
+  - `text`: a `string` feature.
+  - `label`: a `string` feature.
+- `answerKey`: a `string` feature.
+
+#### ARC-Easy
+- `id`: a `string` feature.
+- `question`: a `string` feature.
+- `choices`: a dictionary feature containing:
+  - `text`: a `string` feature.
+  - `label`: a `string` feature.
+- `answerKey`: a `string` feature.
+
+### [Data Splits Sample Size](#data-splits-sample-size)
+
+|    name     |train|validation|test|
+|-------------|----:|---------:|---:|
+|ARC-Challenge| 1119|       299|1172|
+|ARC-Easy     | 2251|       570|2376|
+
+## [Dataset Creation](#dataset-creation)
+
+### [Curation Rationale](#curation-rationale)
+
+[More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
+
+### [Source Data](#source-data)
+
+[More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
+
+### [Annotations](#annotations)
+
+[More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
+
+### [Personal and Sensitive Information](#personal-and-sensitive-information)
+
+[More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
+
+## [Considerations for Using the Data](#considerations-for-using-the-data)
+
+### [Social Impact of Dataset](#social-impact-of-dataset)
+
+[More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
+
+### [Discussion of Biases](#discussion-of-biases)
+
+[More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
+
+### [Other Known Limitations](#other-known-limitations)
+
+[More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
+
+## [Additional Information](#additional-information)
+
+### [Dataset Curators](#dataset-curators)
+
+[More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
+
+### [Licensing Information](#licensing-information)
+
+[More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
+
+### [Citation Information](#citation-information)
+
+```
+@article{allenai:arc,
+      author    = {Peter Clark  and Isaac Cowhey and Oren Etzioni and Tushar Khot and
+                    Ashish Sabharwal and Carissa Schoenick and Oyvind Tafjord},
+      title     = {Think you have Solved Question Answering? Try ARC, the AI2 Reasoning Challenge},
+      journal   = {arXiv:1803.05457v1},
+      year      = {2018},
+}
+
+```
+
+
+### Contributions
+
+Thanks to [@lewtun](https://github.com/lewtun), [@patrickvonplaten](https://github.com/patrickvonplaten), [@thomwolf](https://github.com/thomwolf) for adding this dataset.