Here are two sentences:

The U.S. government and private technology experts warned Wednesday that hackers plan to attack thousands of Web sites Sunday in a loosely co-ordinated " contest " that could disrupt Internet traffic .

THE US government and private technology experts have warned that hackers plan to attack thousands of websites on Sunday in a loosely co-ordinated " contest " that could disrupt Internet traffic .
OPTIONS:
- no
- yes

yes

Here are two sentences:

The 3 { hours of recordings include conversations between police , firefighters and other emergency workers , as well as media inquiries .

Among them are conversations between police , firefighters and other emergency workers , as well as media inquiries .
OPTIONS:
- no
- yes

yes

Here are two sentences:

Investigations by the Air Force inspector general and the Defense Department also are under way .

The Air Force inspector general and the Pentagon also are investigating .
OPTIONS:
- no
- yes
yes