Use "advertency" in a sentence

1. • Caused the death of the victim by inadvertency

2. "Ladies and gentlemen," he said, addressing the public, "through our inadvertency there has arisen a comical misunderstanding which has been removed; but I've hopefully undertaken to do something at the earnest and most respectful request of one of our local poets

3. I do not attribute any wilful misstatement to him, but consider it the effect of inadvertency or mistake