| http://www.w3.org/ns/prov#value | - For instance, learners can be greeted by a 'bot' whenever they enter a room (location context), but that greeting can also be sensitive to an endless number of variables such as the time of day, the gender of the learner (or his/her avatar), the formality of context (e.g. the bot as teacher versus the bot as shop assistant) and the frequency of visits.
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