Non-speech text in <seg> and <u> elems

[BobBorges]

I noticed working with interpellation questions that pre199495, questions submitted in writing that are included in protocols are often annotated with seg and u elements, though they are not representing speech events. It's probably part of a larger issue, not only related to these debates:

• Identify parts of the protocols that are not representative of speech events (IP questions, tables of contents, budget tables, etc...)
• decide how to annotate: note with type attr, other types of elements, sth else?
• re-label non-speech event text from seg/u to whatever other annotation scheme we decide on

[BobBorges]

welfare-state-analytics/riksdagen-corpus#296