sentence: First , the growth of the population still continues , the space for living is still a serious problem , although the skyscraper has already solved most problems related to the population crisis .
modified: First , the development of population still continue , the space for living still a serious problem although , the skyscraper already solved the most of problems from population crisis .
transformation: NOUN, DET, VERB:SVA, VERB, PUNCT, PUNCT, VERB:TENSE, DET, PREP, OTHER, DET