Audio and video documents can include repetitions, hesitation, nonsensical talk, jargon which can be hard to understand and speakers mumbling incoherently and inaudibly.
It can perhaps help perform trend analysis across documents, determine the theme and gist of documents, allow fuzzy searches on unstructured documents.
Temporary insurance is sometimes granted in terms of a reminder to renew an existing insurance contract, and can be encountered in various other types of documents.