What if there WAS some one concealed in the house? 
There was a chance that someone was hiding in the house.
There was no chance that someone was hiding in the house.
A young woman has a racquet in her hand.
Workers are tearing apart cement.
You can never expect to win by using the last three digits of your Social Security to win the lottery.
The jogger is at home playing video games.
A man with works on a sculpture.
there is a woman in the picture