Question:
Boeing airliner crashes in Russian city of Kazan, 50 killed

What is a sentence that would be (on a scale from 0 to 5) a 4 out of 5 in terms of textual similarity to the above sentence?

Answer:
Boeing airliner crashes in Russia, 50 killed

Question:
Nigeria police make arrests after college massacre

What is a sentence that would be (on a scale from 0 to 5) a 3 out of 5 in terms of textual similarity to the above sentence?

Answer:
Nigeria: Nigerian troops swarm after 40 killed in student massacre

Question:
12 Dead, Despite Cease-fire in East Ukraine

What is a sentence that would be (on a scale from 0 to 5) a 2 out of 5 in terms of textual similarity to the above sentence?

Answer:
Deadly Blast Rocks Coal Mine in East Ukraine