YOU SAID:
Bertil think he is a dwarf
INTO JAPANESE
Bertilは彼が小人だと思います
BACK INTO ENGLISH
Bertil thinks he is a dwarf
INTO JAPANESE
Bertilは彼が矮星だと思っている
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Bertil thinks he is a comet
INTO JAPANESE
Bertilは彼が彗星だと思っている
BACK INTO ENGLISH
Bertil thinks he is a comet
You've done this before, haven't you.