A deaf person stole a blind person's hen and a dumb person saw him stealing.How can the dumb person convey this to the blind person?
If we go by just the rules, then there is nothing we can do. The blind person can only hear things, and dumb person can't say anything.
We have to think outside the box for this one.
Lets assume that the blind person knows Braille. Then the dumb person could write out his communication in Braille for the blind person.
Alternatively, the dumb person could use some "text-to-speech" app on his smart phone.
Or guide the blind persons hand to the location of the missing hen and let him figure it out.
Or find someone to act as an intermediary and translate the dumb persons writing to speech.
Or if they both know morse code, the dumb person can tap out the message.