public string GetAndUpdateMostCommonWord(int eventId)
{
//This contoller method demonstrates the NEW BEHAVIOR of DbContext.Entry.State
//which will only affect the root of the graph passed in
var eventGraph = _repo.GetWeatherEventAndReactionsById(eventId);
var theWord = ReactionParser.MostFrequentWord(
eventGraph.Reactions.Select(r => r.Quote).ToList());
eventGraph.MostCommonWord = theWord;
_repo.UpdateWeatherEventOnly(eventGraph);
Console.WriteLine($"NOTE: Graph still has {eventGraph.Reactions.Count} reactions attached");
return theWord;
}