Consider the two utterance units below. In the middle of a sentence, a speaker will sometimes pause long enough for a second speaker to interject a few words and then the first speaker will finish their sentence. This is marked by empty square brackets as shown below. In the example below, s makes a three utterance answer that is interrupted by an acknowledgment. You are allowed to group a continuous series of utterances together into a segment to accommodate cases where several utterances form one answer, request, etc.
Segments can receive any label that an utterance can.
Section 5 discusses how to tag dialogs using the dat annotation tool and how to form and tag segments with the tool. Generally, the dimensions are orthogonal, and you can find examples of any possible combination of labels. We will explicitly point out a few places where this does not seem to hold. Sometimes you will be unsure of whether or not a label should be applied to an utterance. Section 5 discusses the dat annotation tool and how to mark uncertainty using it.