Pills coating (4 points)
========================

To control the coating process of pills, a pharmaceutical company
takes data on temperature, humidity and ventilation at different
points in the production center. This data in each point is represented
in a string (:py:class:`str`) with the following format:

``'code-TEMP:t-HUM:h-air'``

where ``code`` is the point code, ``t`` is the temperature, ``h`` is
the humidity and ``air`` is a string which can be 'ON' or 'OFF'
indicating whether there is ventilation at that point or
not. Examples: ``'AX1-TEMP:40-HUM:70-ON'``, ``'B4-TEMP:4-HUM:9-ON'``,
``'BRF66-TEMP:102-HUM:100-ON'``. The temperature and humidity are
always positive integer values. See that the point code has a variable number of characters. 

Write function :py:func:`control` that takes a list of strings as
described and returns a list of tuples that correspond to those points
with ventilation (i.e. if ``air`` is 'ON'). Each tuple has three
elements: the point code (:py:class:`str`), the temperature
(:py:class:`int`) and the humidity (:py:class:`int`). The list of
tuples must be sorted lexicographically, i. e., first by point code,
then by temperature and then by humidity.

Save this function to file ``p1.py``.

Examples:

.. literalinclude:: test-control.txt
      :language: python
      :lines: 3-12

.. note::

   More tests are provided in file :download:`test-control.txt`.