stanford-openie-python VS python-sutime

What would your relation look like? If it going to be rather abstract like a relation in a knowledge base (e.g., per:child_of)? Or is it okay if it's more free form? If it's the latter then I'd recommend looking at open information extraction tools. There's a Python implementation of Stanford's OpenIE system from 2015 here and there are other works that have open-sourced their code.

One approach to solving your longer text problem would be to first split longer text into sentences and check with something like https://github.com/FraBle/python-sutime to see if it contains dates. If not, you don't need to clean that part! If so, you can clean the sentence and then use same library to verify dates have been removed.

I need to install python wrapper for SUTime i need to install it using pip but them there is a line which says install JAVA dependencies using following command mvn dependency:copy-dependencies -DoutputDirectory=./jars -f $(python3 -c 'import importlib; import pathlib; print(pathlib.Path(importlib.util.find_spec("sutime").origin).parent / "pom.xml")')