Rate the similarity of the following two sentences
6 NATO troops killed in Afghanistan IED attack
6 NATO troops killed in Afghanistan

4

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They later fell out and have backed a series of rival Congolese militias in recent years.
The two invading countries later fell out, and have since backed rival factions.

4

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Thai junta amasses security force to smother Bangkok protests
Thai junta security forces stay in barracks as protests dwindle
2