XML Document Instance

The following example is called an XMl document instance,Which means that it represents one possible set of data for a particular markup language.It might be saved as a file or sent over the internet as the payload of a SOAP message.
You see two XML document instance below but both are different SInce it has same elements, It is considered as different XML document instance because of the Data represented are different.

<address>
<type>HOME</type>
<Street>5577 High street</street>
<city>Erie</city>
<state>PA</state>
<zip>16507</zip>
</address>

<address>
<type>OFFICE</type>
<Street>5511 main street</street>
<city>Erie</city>
<state>PA</state>
<zip>16507</zip>
</address>