Having a Separate Page Side by Side for Form Validation

Hi there, thanks in advance for reading this post!
I have a requirement to do with User Task validation when it comes to Task List.
Here the scenario, imagine I need to extract few entities from a document and let the user validate it after it comes to User Task validation. I need to have the original document open for me to validate the extracted entity. Would this be possible to have this when a user claim a task?