A example would be reading your friends diary. Or looking at the Mona Lisa panting online.
Now if your reading your own diary then it's primary.
If your looking at the real Mona Lisa in the musam then it's a primary.
Answer:
There was an Old Man with a beard, Who said, 'It is just as I feared! Two Owls and a Hen, Four Larks and a Wren, Have all built their nests in my beard!
Explanation: