While this majority label would encourage the second CRF to switch the labels of all occurrences of the token sequence to Location, it would not strongly discourage the CRF from labeling these as Organization, since there would be several occurrences of token sequences in the training data labeled Organization, with the majority label of the token sequence being Location.
capturing label-consistency at the level of the whole test corpus is particularly helpful for token sequences that appear only once in their documents, but occur a few times over the corpus, since they do not have strong nonlocal information from within the document.