The software will automatically detect the other parts and extract the combined contents. To tell you what is inside, I would need to know: Where did you or receive this file from?
To access the content, you must:
Knowing the source can help me identify the likely data type. s0391.7z.005
(001, 002, 003, 004, 005, etc.) into the same folder. The software will automatically detect the other parts
Without access to the specific file itself, I cannot list its exact contents. However, based on the file name format (likely a code or project number like "s0391"), it is likely one of the following: s0391.7z.005