Suicide bombers attack US base in Afghanistan

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?
Suicide bomber kills 3 at US base in Afghanistan

The case decided Monday centered around an Illinois fund-raiser, Telemarketing Associates.

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?
The case comes out of Illinois and involves a for-profit company called Telemarketing Associates Inc.

School bomb attack kills two in southern Thailand

What is a sentence that would be (on a scale from 0 to 5) a 1 out of 5 in terms of textual similarity to the above sentence?
Three bomb attacks kill six soldiers, one civilian

Cabinet at war over arming Syrian rebels

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Assad warns Turkey of 'heavy price' for backing Syrian rebels