Yes. If you put lots of text into a spreadsheet, you can upload it into the Knowledge Base. I often favor this format because it gives me so much control. For example, in the Doorman Pickaxe I have a spreadsheet with a column for user question and a column for the answers I’ve written. Uploaded into the KB, each row is added as an individual chunk, so I ensure that each chunk has both the full question and the full answer when it’s recalled.
This post goes over how spreadsheets are handled in the Knowledge Base (KB) more detail.