[georss] "When" information in georss

[Holmes, Charles V.]

In the effort of simplicity, I'm designing a system that only knows how
to handle one flavor of GeoRSS (currently simple).  There are layers
between the system and actual georss feeds that convert from whatever
format the feed is in into a simple georss feed.
 
I'm currently looking at a feed with information such as:
<gml:TimePeriod>
  <gml:relatedTime>
    <gml:beginPosition/>
    <gml:endPosition/>
  </gml:relatedTime>
...
</gml:TimePeriod>
 
Is there any construct in simple georss to represent this information?
It's basically a LineString and the position of each point is only at
the corresponding time in the TimePeriod.  Or should I make my
understood flavor of GeoRSS more complex?
 
Thanks,
Charles
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