When we're reading a story, we can make many inferences based on the details we're given.
The inferences we can make here are the following:
It is a work environment. - We can make this conclusion based on the narrator's realization that they had to get back to work (<em>Suddenly I realized that I had to get back to work.)</em>
It is daytime. - We can see this thanks to the sunbeams. (<em>Then the sunbeams were blocked...)</em>
The room holds several people. We can make this conclusion based on the following line: <em>We all turned around...</em>
