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: documentation can be found in the articles linked in the introduction. To give a brief 
  summary, here is a list of features:
  
  * Many queries are translated efficiently into the MQL language. Those that can't 
    execute on the client side by default.
  * A selection of sample individuals is given under the `Individuals` entry for each collection 
    of objects. This allows you to program against strongly named individual such as 
    `Hydrogen` or `Bob Dylan`.
  * Custom Freebase operators such as approximate counts and approximate string matching are supported
  * Image URLs are provided via the `GetImages()` method, and the first image is provided using the 
    `MainImage` property
  * Snapshot dates for Freebase are supported. This means that you can view the state of the
    Freebase database on a specific date (also meaning that your application will not break
    when the schema changes).
  * Optional client-side caching of schema information makes type checking quick and efficient
  * If you want to query larger amount of Freebase data, you can register at Google and
    obtain a custom API key. The key can be passed as a static parameter to the type provider.
  
  
negative.code: (**
  ### Debugging MQL queries
  
  If you want to understand how the Freebase type provider works, 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).
  