(During alleged event / Not Defendent Location)
(Q) Derivation:
(A1) “And behold the witness is a false witness, he has testified falsely against his brother,” (Devarim 19,18). This teaches that the witnesses are false; not the testImony.
(A2) “To Testify against him something removed,” (Devarim 19,16)
“Something removed” refers to the conspiring witnesses, who have been proven to be removed from the scene of the crime.
*Connection: Explanation of current mishna*