It is a well-known process to the police, and by means of it you can obtain a photograph of the finger-prints of any object in a very short space of time. 
The police have a method of finding fingerprints on any object.
The police do not know anything about fingerprints.
There is no one in Texas.
The man is looking at another man
Pigs were not used to describe policemen in any of them.
An animal is being corralled by two men.
A Hispanic woman is showing her designs.
A ceile is an evening of traditional song and dance.