#lesson  a unit of instruction; "he took driving lessons"
  supertype:  pedagogy__teaching__instruction  the profession of a teacher; "he prepared for teaching while still in college"; "pedagogy is recognized as an important profession"
  part of:  course
  subtype:  language_lesson  a period of instruction learning a language
     subtype:  French_lesson  instruction in the French language
     subtype:  German_lesson  instruction in the German language
     subtype:  Hebrew_lesson  instruction in the Hebrew language
  subtype:  dance_lesson__dancelesson  a lesson in dancing
  subtype:  music_lesson__musiclesson  a lesson in performing music
     subtype:  piano_lesson__pianolesson  a lesson in playing the piano
     subtype:  violin_lesson  a less in playing the violin
  subtype:  tennis_lesson  a lesson in playing tennis
  subtype:  golf_lesson  a lesson in playing gold

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