Literal question
<span class="h2">I. Dwelling characteristics</span></p>
<p><span class="em">What are the main building materials used for this dwelling?</span><div class="i1">Q51. Walls</div><div class="i2">[] 1. Brick/concrete<br />[] 2. Wood<br />[] 3. Bamboo<br />[] 4. Other</div>