(X->Y)at->[place] _/[time] _/[manner]
Each implicit slot related to the event 'X->Y' corresponds to the questions: "Where?", "when?", and "how?". The truisms with becoming (use of '::') correspond to the questions "Why?" and "how?".For any variable of a narrative filled in by words from an expression, we can ask afterwards: "What was the value of that variable?" Truisms are narratives where this generic question takes on the standard form of: who, how, when, where, what, why (and also "still?" for truism 4). [Hmm...I don't know a truism for "who?". Maybe there is one I have not discovered....I have a weekend to think about it.]