2. The method of claim 1 , wherein generating the search plan further includes determining whether there is a conflict among the preprocessed search queries that meet the precision requirement.
2. The method of claim 1 , wherein generating the search plan further includes determining whether there is a conflict among the preprocessed search queries that meet the precision requirement. 3. The method of claim 2 , wherein determining whether there is a conflict among the preprocessed search queries that meet the precision requirement includes determining whether two or more preprocessed search queries meet the precision requirement.