  This paper presents our strategies in SemEval 2020 Task 4: Commonsense
Validation and Explanation. We propose a novel way to search for evidence and
choose the different large-scale pre-trained models as the backbone for three
subtasks. The results show that our evidence-searching approach improves model
performance on commonsense explanation task. Our team ranks 2nd in subtask C
according to human evaluation score.
