#testimonial  something that serves as evidence; "his effort was testimony to his devotion"
  supertype:  evidence  an indication that makes something evident; "his trembling was evidence of his fear"
  subtype:  good_authority  testimony by someone who should know; "I have it on good authority"
  subtype:  testament.testimonial  strong evidence for something; "his easy victory was a testament to his skill"

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