Add LLM paper and one-sentence summaries for both (#503)

* Revert to gerund

Though the style guide says to just use imperatives, "get started" just sounds weird. Also this is more consistent with "troubleshooting"

* merge

* add one-sentence summary of each paper

* sync other file

* fix typo

* fix typo

* merge

* add PDF

* add citation formats

* minor change

papers/index.md

@@ -5,4 +5,34 @@ nav_order: 40
 has_children: false
 ---
 
-**[Data Commons Overview Paper](http://arxiv.org/abs/2309.13054)**
+- [Data Commons](http://arxiv.org/abs/2309.13054) gioverview paper — background on the motivation, development, and architecture of the Data Commons initiative
+
+    Citation:
+
+    ```
+    @misc{guha2023datacommons,
+      title={Data Commons}, 
+      author={Ramanathan V. Guha and Prashanth Radhakrishnan and Bo Xu and Wei Sun and Carolyn Au and Ajai Tirumali and Muhammad J. Amjad and Samantha Piekos and Natalie Diaz and Jennifer Chen and Julia Wu and Prem Ramaswami and James Manyika},
+      year={2023},
+      eprint={2309.13054},
+      archivePrefix={arXiv},
+      primaryClass={cs.CY},
+      url={https://arxiv.org/abs/2309.13054}, 
+    }
+    ```
+
+- [Knowing When to Ask - Bridging Large Language Models and Data](https://datacommons.org/link/DataGemmaPaper) — technical report on the use of Data Commons statistical data for improving the accuracy of large-language model outputs
+
+    Citation:
+    
+    ```
+    @misc{radhakrishnan2024knowing,
+      title={Knowing When to Ask - Bridging Large Language Models and Data}, 
+      author={Prashanth Radhakrishnan and Jennifer Chen and Bo Xu and Prem Ramaswami and Hannah Pho and Adriana Olmos and James Manyika and R. V. Guha},
+      year={2024},
+      eprint={},
+      archivePrefix={arXiv},
+      primaryClass={cs.CL},
+      url={https://datacommons.org/link/DataGemmaPaper}, 
+    }
+    ```