As an attribute, this means questioning, curious, interested, wondering, not necessarily about something specific. As an abstraction, this refers to curiosity and interest.
la sÄen makÄ“nnÄ;
“She is curious.”
ankÄ“nnÄ can also refer to something experienced:
sema jakÄ“nnÄ to jasÄ“lki jatÅ«i;
She is curious about flying machines.
The form becomes jakÄ“nnÄ because it is the object of SE and so specifies a particular curiosity. This is something I have difficulty explaining. The stative form refers to an abstract concept. But one doesn’t experience an abstract concept, one experiences a feeling or some other specific thing. So, one cannot say sema ankÄ“nnÄ where we would say that someone experiences curiosity, one has to make it specific and so one says sema jakÄ“nnÄ.