It was a very usuful lesson. Thank you for the lesson. About the lesson, I have two questions. You said 'coffee beans' is uncountable because it is too difficult to count. But 'coffee beans' itself has 's' at the end. How do you count 'coffee beans' then? Could you explain it with some examples? Another question is the word 'furniture'. It is not liquids or previously liquid, and it seems like we can count it. Is there any understandable reason that we cannot count furniture?