question: Given the following triplets constituting a sub-graph, please infer the relationship between "transformer model" and "representation learning".
  Triplets: MIReAD - Evaluate-for - representation learning; scientific documents - Used-for - representation learning; pretrained language models - Used-for - representation learning; Part-of; Conjunction; Evaluate-for; Is-a-Prerequisite-of; Used-for; Hyponym-Of
  Relationships Types: Compare, Part-of, Conjunction, Evaluate-for, Is-a-Prerequisite-of, Used-for, Hyponym-Of