Question

Someone who saw (a? -?) robbery called the police

Answer 1

Someone who saw a robbery called the police.

Answer 2

It seems like there might be a typo or missing information in your sentence. I'll provide you with a few different options to complete the sentence:

1. Someone who saw a robbery called the police.
2. Someone who saw the robbery called the police.
3. Someone who saw an attempted robbery called the police.

Please choose the option that best fits the context of the situation you are referring to. If you have more details or a specific question, feel free to provide additional information.