#origination__origin__genesis__genesi__inception  an event that is a beginning; a first part or stage of subsequent events
  supertype:  #beginning  the event consisting of the start of something: "the beginning of the war"
  subtype:  #cause  events that provide the generative force that is the origin of something; "they are trying to determine the cause of the crash"
     subtype:  #antecedent  a preceding occurrence or cause or event
     subtype:  #aetiology__etiology  the cause of a disease
     subtype:  #factor  anything that contributes causally to a result; "a number of factors determined the outcome"
        subtype:  #parameter  any factor that defines a system and determines (or limits) its performance
           subtype:  is#subroutine_parameter
        subtype:  #unknown_quantity__unknownquantity  a factor in a given situation whose bearing and importance is not apparent; "I don't know what the new man will do; he's still an unknown quantity"
        subtype:  #releasing_factor__releasingfactor__releasing_hormone__releasinghormone__RF  a substance produced by the hypothalamus that is capable of accelerating the secretion of a given hormone by the anterior pituitary gland
           subtype:  #growth_hormone-releasing_factor__GHRF  a releasing factor that accelerates the secretion of growth hormone by the anterior pituitary body
        subtype:  #intrinsic_factor__intrinsicfactor  a substance produced by the mucosa of the stomach and intestines that is essential for the absorption of vitamin B12; "lack of intrinsic factor can result in pernicious anemia"
        subtype:  pm#human_factor__humanfactor
     subtype:  #producer.cause  something that produces; "Maine is a leading producer of potatoes" or "this microorganism is a producer of disease"
     subtype:  #mutagenesis__mutagenesi  an event capable of causing a mutation
  subtype:  #preliminary__overture__prelude  something that serves as a preceding event or introduces what follows; "training is a necessary preliminary to employment"; "drinks were the overture to dinner"

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