H58 (Fail): Using language attributes to identify changes in the human language

HTML Snippet Code
Scenario 1: Language of part is not defined
Lang attribute is not provided for anchor
Español 		<div style="font-size:17px">Lang attribute is not provided for anchor</div> <a href="http://www.deque.com">Español</a>
Scenario 2: Language of part value is empty
Lang attribute has null value
Español 		<div style="font-size:17px">Lang attribute has null value</div> <a lang="" href="http://www.deque.com">Español</a>
Scenario 3: Invalid language of part is provided
Lang attribute is invalid for anchor
Español 		<div style="font-size:17px">Lang attribute is invalid for anchor</div> <a lang="abc" href="http://www.deque.com">Español</a>

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