In this short e-mail, I write about several questions, which are 
unrelated to each other except that I assume that they are just a few 
typos. If any of them becomes a bigger question, I suggest to start a 
new thread about it.


> 1984? uncertain: possibly the year 1992,
1984? uncertain: possibly the year 1984,


> 1984?/2004?~ interval whose beginning is uncertain but thought to be 1984, and whose end is 2004
According to "1984?/2004?~", the end of the interval seems to be BOTH 
uncertain and approximate.


I would suggest to add a space after the first temporal expression to make 
it clear that the slash between the two temporal expressions is not part 
of the first temporal expression.