Question:
Iran 'cautiously optimistic' about future nuclear talks

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?

Answer:
German envoy optimistic about Iran-G5+1 talks


Question:
A girl is tapping her finger nails.

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

Answer:
A dog is running on the ground.


Question:
Watch live: US Capitol on lockdown after reports of shots fired

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

Answer:

US Capitol Hill on lockdown after shots fired