Complex sentence: In "The Shooting Star", the part of Philippulus the prophet is severely altered; he is seen at the start of the episode when Tintin reaches the observatory and when Tintin is having a'nightmare'.
Split into simpler sentences: In "The Shooting Star", the part of Philippulus the Prophet is severely reduced. He is seen at the start of the episode when Tintin reaches the observatory and when Tintin is having a'nightmare'.