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README.md

@@ -76,6 +76,19 @@ print(f"COLUMNS IN DATA: {','.join(beancounter['train'][1000].keys())}\n")
 print(f"EXCERPT: \n\n{beancounter['train'][1000]['text'][:1000]}")
 ```
 
+## What fields are in the data?
+The data contains seven fields:
+
+1. `accession` - A unique identifier assigned to accepted EDGAR filings
+2. `filename` - Each filing consists of one or more attachments. This is the filename of the specific attachment within the filing
+3. `text` - Extracted text
+4. `type_filing` - The type of the filing. A full index of SEC filing types can be found [here](https://www.sec.gov/submit-filings/forms-index)
+5. `type_attachment` - The type of the attachment. For example, an 8-K filing will have a main "8-K" attachment but could also have exhibits of other types such as "EX-99"
+6. `date` - The filing date assigned by the EDGAR system
+7. `ts_accept` - The timestamp when the filing was accepted by the EDGAR system
+
+Note that if a filing is accepted by EDGAR after the [filing deadline](https://www.sec.gov/submit-filings/filer-support-resources/how-do-i-guides/determine-status-my-filing#section1) then EDGAR will not disseminate the form until the next business day and the `date` assigned by the EDGAR system will be the next business day, i.e., after `ts_accept`.
+
 # Datasheet
 
 Questions from the Datasheets for Datasets paper, v7.