Decision Tree English Rules and Dependency Network in MS SSAS
I have found a way to get the list of ALL English Rules from the Mining Structure.

SELECT * FROM [MyModel].CONTENT WHERE [CHILDREN_CARDINALITY] = 0


[CHILDREN_CARDINALITY] = 0 defines the DT leaves only.

The following links may be helpful: Decision Trees Model Query Examples, Mining Model Content for Decision Tree Models

"FLATTENED" keyword will split [NODE_DISTRIBUTION] outcomes into separate rows.

SELECT FLATTENED [MODEL_CATALOG],[MODEL_NAME],[NODE_CAPTION],[CHILDREN_CARDINALITY],[NODE_DESCRIPTION],[NODE_PROBABILITY],[NODE_DISTRIBUTION],[NODE_SUPPORT] FROM [MyModel].CONTENT WHERE [CHILDREN_CARDINALITY] = 0 ORDER BY [NODE_SUPPORT] DESC