### CONTEXT (Previous Events):
<user_input timestamp="6684.641801"> </user_input>
<system_output timestamp="6684.650669"> </system_output>
<user_input timestamp="6685.13445">P</user_input>
<system_output timestamp="6685.153272">P</system_output>
<user_input timestamp="6685.356242">R</user_input>
<system_output timestamp="6685.363791">R</system_output>
<user_input timestamp="6685.480186">I</user_input>
<system_output timestamp="6685.498503">I</system_output>
<user_input timestamp="6685.749218">N</user_input>
<system_output timestamp="6685.764599">N</system_output>
<user_input timestamp="6686.257811">T</user_input>
<system_output timestamp="6686.266024">T</system_output>
<user_input timestamp="6686.500679">E</user_input>
<system_output timestamp="6686.516915">E</system_output>

### TARGET LINE (Extract and Classify THIS Timestamp):
<user_input timestamp="6686.724917">R</user_input>

Answer: 6686.724917, old event