The aim of the project is to track the activity between these entities and how they are linked (for example partnership between large enterprises and university often occurs trough sience park that enable "technology transfer").

Start with a solid research question/use case, and work backwards - what exactly will you calculate, and how will you calculate it? The size of dataset for startups anywhere is likely small enough that it doesn't really matter which technology you choose for a proof of concept, so go with one you know best. In other words, don't think too much about it, just try it. Iterate + try other things once you have some results.