Here are two sentences:

The state wants to kill the wolves in approximately a 1,700-square-mile area near the village of McGrath .

The state wants to kill the wolves in approximately a 1,700-square-mile area near McGrath to establish a moose nursery of sorts .

no

Here are two sentences:

The Sars illness , wars in Iraq and Afghanistan , and economic uncertainty in Europe and the US have depressed air travel .

The outbreak of severe acute respiratory syndrome , wars in Iraq and Afghanistan and economic uncertainty in Europe and America have depressed air travel .

yes

Here are two sentences:

He urged the US to provide clear rules on what would happen at possible trials .

Government sources said Mr Howard urged the US to provide clear rules governing any potential trials .
yes