### CONTEXT (Previous Events):
<system_output timestamp="148.962846">1</system_output>
<user_input timestamp="149.385401"></user_input>
<user_input timestamp="149.513094">a</user_input>
<system_output timestamp="149.539237">[K</system_output>
<system_output timestamp="149.675082">a</system_output>
<user_input timestamp="149.714719">1</user_input>
<system_output timestamp="149.867322">1</system_output>
<user_input timestamp="149.910595">	</user_input>
<system_output timestamp="150.086088"/>
<user_input timestamp="150.601978">	</user_input>
<system_output timestamp="150.764141"/>
<user_input timestamp="151.19859">.</user_input>
<system_output timestamp="151.351298">.</system_output>
<user_input timestamp="151.732677">b</user_input>

### TARGET LINE (Extract and Classify THIS Timestamp):
<user_input timestamp="151.851825">i</user_input>

Answer: 151.851825, old event