Break index 1 marks the juncture between two consecutive ``words'', with no higher-level prosodic boundary. The question of what is a ``word'' in Japanese is a difficult one, especially concerning the status of postpositions as separate words. J_ToBI does not provide a definitive answer to this question, and currently the dictionary entry (including any inflectional or derivational endings) is taken as the working definition of a ``word''. Postpositions and sentence particles are treated as separate words in the word and break index tiers. Boundaries marked with a break index 1 have a stronger sense of disjuncture than BI 0, but a smaller disjuncture than BI 2 marking a full accentual phrase break (see section 4.3 below). All of the example utterances shown so far contain examples of the BI 1 label.