Occurrence of terms in LexEBI according to their length: The terms (baseforms and term variants) from the different resources have been matched against the GP7 terms in LexEBI.

<p>The results have been sorted according to the term length (x = 1 to 89) and the frequencies are presented in logarithmic scale (y = 0 to 6.0). After sorting, the results for the terms have been grouped into bins where each bin represents terms of a given length +/−1. For GP7 the overall occurrence is given, for the other resources the numbers indicate how many occurrences of a GP7 term contain a term of the alternative resource, e.g. ChEBI. A large portion of GP7 terms do contain ChEBI terms, and - to a lower rate - a disease or a species term. It is obvious that longer terms are more likely to be composed of terms of a different semantic type. According to the annotation guidelines, species terms should not be part of the PGN.