ids for s and w in FOLIA about mtas

[matthijsbrouwer]

To represent them on both sentence and token level:

<mappings>
	<mapping type="word" name="w">
		<token type="string" offset="false" realoffset="false" parent="false">
			<pre>
				<item type="string" value="word.id" />
			</pre>
			<post>
				<item type="attribute" namespace="http://www.w3.org/XML/1998/namespace" name="id" />
			</post>
		</token>
	</mapping>
	<mapping type="group" name="s">
		<token type="string" offset="false">
			<pre>
				<item type="string" value="sentence.id" />
			</pre>
			<post>
				<item type="attribute" namespace="http://www.w3.org/XML/1998/namespace" name="id" />
			</post>
		</token>
	</mapping>
</mappings>

Search with CQL for [word.id="s3.w2"] or <sentence.id="s3"/>