If you can draw a picture of this question, the answer is obvious. The number of people who can speak three languages is 0, and the number of people who can speak Japanese and French, Japanese and English, English and French (that is, all the people who can speak two languages) is 20+22+30-56= 16. There are 14 people who can only speak French, that is to say, the sum of those who can speak both Japanese and French plus those who can speak both French and English is 22- 14=8 people. Then, the number of people who can speak both Japanese and English is 16-8=8.