In this task, you will be presented with a context from an academic paper and a question separated with a
. You have to answer the question based on the context.
Q: In this paper, we describe and evaluate Nefnir BIBREF0 , a new open source lemmatizer for Icelandic. Nefnir uses suffix substitution rules derived (learned) from the Database of Modern Icelandic Inflection (DMII) BIBREF1 , which contains over 5.8 million inflectional forms.
Question: How are the substitution rules built?
A:
from the Database of Modern Icelandic Inflection (DMII) BIBREF1