VLookup without vba

I have a sheet where I need to make a note next in one column based on the contents of another.

Scenerio.

Column T contains a short list of items to be matched against the contents of Column B.  If Column B contains one or more instances of any tem in Column T, then the appropriate row or rows in Column S should be marked with the words Unreachable.

I need a VLookup solution that won't require any VBA.  

Assistance is greatly appreciated.
Sample.xlsx