Figure 8From: Challenges in the association of human single nucleotide polymorphism mentions with unique database identifiersExemplified depiction of a paragraph annotated by a machine learning tool. Prior to normalization all sub-entities (alleles and location) have to be combined into tuples of entities. In this example the location 261 can be wrongly associated with the two closest states G and C. This can be circumvented by punishment of punctuation marks between two entities, like the comma in this case.Back to article page