sentence: For example , Japan is the world 's third largest economy after the United States and China , its economy is so developed , but food , oil , and other resources are all imported , and it puts a lot of heavy industry into developing countries in order to protect its own environment .
modified: For example , Japan is the world 's third largest economy after the United States and China , its economy is so developed , but food , oil , and other resources are all imported , and it put a lot of heavy industry into developing countries in order to protect its own environment .
transformation: VERB:TENSE