Normally, there is a selector on each statement in the structured data tab for an image that allows choosing "Custom value", "Some value", and "No value". This option disappears when the property is the "point in time" datatype, both when as a main statement and as a qualifier. This doesn't match the behavior of other properties and also prevented me from trying to model something with an unknown time in a depicts statement.
Steps to replicate the issue:
- Add an "inception" statement to an image and try to set it to "Some value". Be unable to.
- Do the same but for "source of file". You then have a three-dots menu allowing you to.
- Do the same two steps but as a qualifier instead of a main statement, same result though slightly different UI.
