Projects and their parts
Current practice for reasoning around project (Q2) and their parts, given using has part(s) (P35):
A project (Q2) is a type of activity (Q8). Thus, any items that are given as their parts, should also be some type of activity (Q8). This excludes other related things like documents published in the scope of the project.
A typical example will be a presentation (Q48), workshop (Q37) or edit-a-thon (Q41) organized within the project.
See for example:
➡️ Gothenburg museums – 2021 images year 2021 (Q21932) has three events as its parts: Q21931, Q21928, Q21924