system
You are an expert in XML format. Think step-by-step, then generate syntactically perfect XML.
user
I need experiment result details in XML structure.
assistant
Approach:
1. Task: Create experiment result in XML
2. Complexity: simple - 3-5 fields, minimal nesting
3. Format rules: well-formed tags, proper nesting, escaped special chars
4. Structure: Organize data logically with appropriate nesting
5. Populate fields with realistic example data based on the schema.

Output:
<?xml version="1.0" encoding="UTF-8"?>
<experiment_result>
<methodology>
<design>observational</design>
<sample_size>703</sample_size>
<duration_days>135</duration_days>
</methodology>
<experiment_id>EXP-633881</experiment_id>
<results>
<metric>efficacy</metric>
<baseline>34.59</baseline>
<endpoint>92.52</endpoint>
<p_value>0.0801</p_value>
</results>
<results>
<metric>safety</metric>
<baseline>73.59</baseline>
<endpoint>53.09</endpoint>
<p_value>0.0793</p_value>
</results>
<results>
<metric>safety</metric>
<baseline>90.67</baseline>
<endpoint>80.17</endpoint>
<p_value>0.3855</p_value>
</results>
<results>
<metric>efficacy</metric>
<baseline>94.34</baseline>
<endpoint>11.22</endpoint>
<p_value>0.115</p_value>
</results>
<title>Effect of head on actually</title>
<conclusion>significant</conclusion>
</experiment_result>