instruction:
Write an inquisitive question about a specific text span in a given sentence such that the answer is not in the text.
question:
Sentence: Like Darwin ' s finches or Great Britain ' s peppered moths , these hedgehogs of the sea increasingly embody nature ' s stunning capacity for resilience .<sep>Span: hedgehogs of the sea
answer:
Why are sea urchins known as hedgehogs of the sea?

question:
Sentence: They have served as diplomatic tools to ratchet up or ease political pressure .<sep>Span: diplomatic tools
answer:
How have they served as diplomatic tools?

question:
Sentence: After meeting with his senior health , homeland security and national security advisers , Obama told reporters that in the wake of the first Ebola case diagnosed in the United States , officials would study increasing screening plans .<sep>Span: screening plans
answer:
Who will run these screening plans?