### CONTEXT (Previous Events):
<user_input timestamp="1723.949658"></user_input>
<system_output timestamp="1723.956895">[K</system_output>
<user_input timestamp="1723.990665"></user_input>
<system_output timestamp="1723.997759">[K</system_output>
<user_input timestamp="1724.031728"></user_input>
<system_output timestamp="1724.039168"/>
<user_input timestamp="1724.402626">s</user_input>
<system_output timestamp="1724.409129">s</system_output>
<user_input timestamp="1724.505335">u</user_input>
<system_output timestamp="1724.512025">u</system_output>
<user_input timestamp="1724.665943">d</user_input>
<system_output timestamp="1724.675839">d</system_output>
<user_input timestamp="1724.747694">o</user_input>
<system_output timestamp="1724.755616">o</system_output>

### TARGET LINE (Extract and Classify THIS Timestamp):
<user_input timestamp="1724.852438"> </user_input>

Answer: 1724.852438, old event