| http://www.w3.org/ns/prov#value | - Thanks very much.I am a bit tempted to be flip with the teacher (who, btw, sent this at 7:45, so whatever was being done right at 7:40 didn't require his full attention.) After all, the bridge construction has changed traffic flows three times in the last four weeks, and predicting the time to leave the house to have her arrive at 7:35 is an estimate with much greater uncertainty now than in time p
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