sentence: And that is a serious problem , because in the not too distant future , we wo n't be able to handle the garbage - there wo n't be enough space where we can deposit it .
modified: And it is a serious problem , because in the not so distant future we wo n't be able the handle the garbage - it wo n't be enough space where we could deposit that .
transformation: PRON, ADV, PUNCT, OTHER, OTHER, VERB:TENSE, PRON