Also, with the "before" keyword in place of "after", the problem is
different, it considers all events as the start event.
rule "Detect it"
when
$start : RawEvent()
not $re : RawEvent(eval($re != $start), id == $start.id, this
before[0ms, 90s] $start)
then
System.out.println("detected: " + $start);
end
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