Can we draw the following hypothesis from the context? 

Context:

The Thought Counts<br>The same lady came in to clean up John's office every evening. John decided to do something nice for her. John got some flowers and a box of candy. John left them on his desk for her. The next day, John learned that his co-workers ate the candy!

Hypothesis: johns coworkers knew they ate her candy.
It's impossible to say