# Where does our data come from?

The data on System is currently sourced from the entire PubMed corpus: the leading health and biomedical database used by millions of researchers every day. 

So far, we’ve extracted over 14 million findings from more than 5 million studies, including all English-language abstracts on PubMed and open-access full-text articles. We add new findings daily as the corpus grows. Importantly, we extract relationships **at the source**, from the original research studies, along with key metadata like covariates and study population, before structuring those findings and storing in our graph database. \ <br>


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.system.com/system/how-system-works/system-platform/where-does-our-data-come-from.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.