## Warning in tm_map.SimpleCorpus(bc.corpus, content_transformer(Textprocessing)):
## transformation drops documents
## Warning in tm_map.SimpleCorpus(myCorpus, content_transformer(wordprocessing)):
## transformation drops documents
## Warning in tm_map.SimpleCorpus(bc.corpus, content_transformer(tolower)):
## transformation drops documents
## <<TermDocumentMatrix (terms: 7016, documents: 1397)>>
## Non-/sparse entries: 17866/9783486
## Sparsity : 100%
## Maximal term length: 55
## Weighting : term frequency (tf)