The semi-final proved to be more difficult, a poor start meant Gillings lost ground but some excellent lines at the top of the course meant she led going into the first jump and kept in going to the finish line.

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Manslaughter would not be difficult to prove but for Florida's "stand your ground" law.

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Without these firms, hydrocarbons would largely stay in the ground or locked in the sea-bed, heavy manufacturing would be difficult to impossible, electricity and communications would be more episodic and primitive, and the list goes on.

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Thus, radioactive leaks through the ground, in the event of a Chernobyl-like catastrophe, would be difficult to contain.

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Now, obviously, there are going to be tensions in such a complicated, difficult environment, and a -- in a situation in which on the ground, both Afghans and Americans are making enormous sacrifices.

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