  This paper presents the RGCL team submission to SemEval 2020 Task 6:
DeftEval, subtasks 1 and 2. The system classifies definitions at the sentence
and token levels. It utilises state-of-the-art neural network architectures,
which have some task-specific adaptations, including an automatically extended
training set. Overall, the approach achieves acceptable evaluation scores,
while maintaining flexibility in architecture selection.
