I was a little unsure about the criterion of "can uniquely identify". I left a bunch of things blank if I felt that I had little or no idea "who someone is" even if I had certainly heard the name before.
For example, I left actors and singers blank if I didn't know any works involving them or what genres they work in (or whether they're still alive), and I left sports figures blank if I didn't know what country or team they played for or whether they're still active, even if in each case I had heard that there was such a person. Is that the intended approach? Is what consistent with what other people did?
Similarly, I left movies blank if I had no idea what the movie was about or what kind of movie it was, or what story it was based on, even if I'd heard that there was such a movie.
Thanks! Yes, deciding how to define whether you know something or not wasn't easy. Eventually I settled on "uniquely identify" and I'm happy you understood it correctly -- it's not enough just to have heard of somebody or something, but you need to be able to name one (any) unique fact about them.
Does it count if I can uniquely identify the person/thing after having seen the Wikipedia overlay? For example, I saw a name that sounded vaguely familiar, but once I saw their picture, I recognized who they were and what TV show I knew them from. But I couldn't necessarily have drawn that connection from just the name.
Put another way: are you testing that I know of the entity itself, or that I know the entity and its/their name?
EDIT: another example: For a given novel title, I could probably have recalled who the author was (which would seem to be "a unique fact about [it]") but not anything about the plot. However, you listed the author right under the title, so... did I "know" that novel?
That's what I did too. If I had heard of the person, even if I've heard of them a lot (example: Niki Minaj... all I knew was a hunch that she's in the entertainment industry) but had no idea who they are or what they look like, I left it blank.
For example, I left actors and singers blank if I didn't know any works involving them or what genres they work in (or whether they're still alive), and I left sports figures blank if I didn't know what country or team they played for or whether they're still active, even if in each case I had heard that there was such a person. Is that the intended approach? Is what consistent with what other people did?
Similarly, I left movies blank if I had no idea what the movie was about or what kind of movie it was, or what story it was based on, even if I'd heard that there was such a movie.