Does it support testing a single PDF file?

[zhoumengbo]

I understand that LongRAG extracts articles from Wikipedia XML dump files and stores them in multiple files, each of which contains multiple documents in XML or JSON format. LongRAG splits Wikipedia documents into larger retrieval units through a set of indexing processes designed by itself, thereby achieving more efficient retrieval and answer extraction. But I want to use LongRAG to build an index for a single PDF file and test it. Is this possible?