Literal question
<span class="h1">Dwelling</span></p>
<p>20. Type of heating</p>
<div class="i1">Central heating</div><div class="i2">[] 1 From a public heating centre</div><div class="i1">From an installation in the dwelling with</div><div class="i2">[] 2 Gas from the public network<br />[] 3 Liquefied gas (gas cylinder)<br />[] 4 Solid fuel<br />[] 5 Liquid fuel<br />[] 6 Another type of energy used.</div><div class="i1">No central heating, the heating is provided by<br />A cooker with</div><div class="i2">[] 7 Gas from the public network<br />[] 8 Liquefied gas (gas cylinder)</div><div class="i1">A stove (fireplace) with</div><div class="i2">[] 9 Gas from public network<br />[] 10 Liquefied gas (gas cylinder)<br />[] 11 Solid fuel<br />[] 12 Liquid fuel<br />[] 13 Electric energy<br />[] 14 Another type of heating<br />[] 15 No heating at all</div>