sentence: Security guards had a lot of work to do but , thanks to them , we stood a chance of dealing with other problems , such as , for example , regulating the quality of the sound .
modified: Security guards had a lot of work to do but thanks to them we stand a chance to deal with other problems , as for example regulating the quality of sound .
transformation: PUNCT, PUNCT, VERB:TENSE, PART, VERB:FORM, ADJ, PUNCT, PUNCT, DET