anchor.diff:  ### Exploring Freebase data
   
   Now you can explore the Freebase data schema by typing `data.` and exploring the
  -available data sources in the autocomplete. For example, the following snippet
  +available data sources using autocomplete. For example, the following snippet
   retrieves the Chemical Elements and then looks at the details of Hydrogen:
   *)
   
  
positive.code: (**
  ### Debugging MQL queries
  
  If you want to understand how the Freebase type provider work, or if you want to debug a 
  performance issue, it might be useful to see the requests that the provider sends to 
  Freebase. This can be done by subscribing to the `SendingQuery` and `SendingRequest` events.
  The former triggers for overall Freebase MQL queries and can be run in the [Freebase query editor](http://www.freebase.com/query).
  
negative.code: ### Units of Measure
  
  Units of measure are supported. For example, the `Atomic mass` property of chemical elements
  is automatically converted to SI units and exposed in Kilograms. This is statically
  tracked in the F# type system using units of measure. 
  
  Here is an example from data about cyclones and hurricanes:
  