"Leprechauns don't exist" - fine.
"Elves don't exist" - fine.

Rate the textual similarity of these two sentences on a scale from 0 to 5, where 0 is "no meaning overlap" and 5 is "means the same thing".

Answer: 3

Europe shares bounce as more China stimulus seen
Oil prices rise on hopes for stimulus

Rate the textual similarity of these two sentences on a scale from 0 to 5, where 0 is "no meaning overlap" and 5 is "means the same thing".

Answer: 1

Four Morsi supporters killed in Egypt clashes
Dozens injured as Morsi supporters clash with security forces

Rate the textual similarity of these two sentences on a scale from 0 to 5, where 0 is "no meaning overlap" and 5 is "means the same thing".

Answer: 2

Feet standing on a pretty day with large building in background.
Two police officers standing behind a van with a bus in the background.

Rate the textual similarity of these two sentences on a scale from 0 to 5, where 0 is "no meaning overlap" and 5 is "means the same thing".

Answer:
0