Whitespace nodes should be ignored.
Thre is another child element of the same type.

There is a prior child element of another type.

> A previous element of the parent should not affect.

The parent element of the same type should not affect.

A child of the previous element should not affect.
The second child element of the same type should not match.
The second child element of the same type should not match, the first child has case-different tag name.