Update README.md

README.md

@@ -1,3 +1,34 @@
 ---
 license: mit
+task_categories:
+- question-answering
+language:
+- en
 ---
+
+# Data
+
+### Original source
+All question-answer pairs were obtained from the [DPR](https://github.com/facebookresearch/DPR) repository.
+
+### Data format
+
+The expected data format is a list of entry examples, where each entry example is a dictionary containing
+- `question`: question text
+- `reference`: list of answer text for evaluation
+- `ctxs`: a list of passages
+
+Entry example:
+```
+{
+  'question': 'who got the first nobel prize in physics',
+  'answers': ['Wilhelm Conrad Röntgen'],
+  'ctxs': [
+            "Wilhelm Conrad Röntgen won first Nobel Prize in Physics.",
+            "Wilhelm Conrad Röntgen won it for discovery of X-rays",
+            "Albert Einstein was awarded the 1921 Nobel Prize in Physics",
+            "The Nobel Prize in Physics is a yearly award.",
+            "First law of thermodynamics was stated by William"
+          ]
+}
+```