### CONTEXT (Previous Events):
<user_input timestamp="939.068151">t</user_input>
<system_output timestamp="939.078085">t</system_output>
<user_input timestamp="939.190853"> </user_input>
<system_output timestamp="939.192945"> </system_output>
<user_input timestamp="939.456636">c</user_input>
<system_output timestamp="939.460058">c</system_output>
<user_input timestamp="939.70092">a</user_input>
<system_output timestamp="939.709926">a</system_output>
<user_input timestamp="939.947037">c</user_input>
<system_output timestamp="939.956361">c</system_output>
<user_input timestamp="940.235336">h</user_input>
<system_output timestamp="940.248359">h</system_output>
<user_input timestamp="940.578843">e</user_input>
<system_output timestamp="940.597699">e</system_output>

### TARGET LINE (Extract and Classify THIS Timestamp):
<user_input timestamp="940.821125"> </user_input>

Answer: 940.821125, old event