sentence: In recent years , many nations are developing their own economies rapidly , and it means that many areas of farmland and forests are being cut down to build better and bigger houses and a more convenient transportation system .
modified: In recent years , many nations are developing their own economy rapidly , and it takes that many areas of farmlands and forests are being cut down to build a better and bigger house and a more convenient transportation system .
transformation: NOUN:NUM, VERB, NOUN:NUM, DET, NOUN:NUM