  x Document
   ,-[$DIR/tests/html5lib-tests-fixture/tests9_dat.4.html:1:1]
 1 | <!DOCTYPE html><body><select><math></math></select>
   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests9_dat.4.html:1:1]
 1 | <!DOCTYPE html><body><select><math></math></select>
   : ^^^^^^^^^^^^^^^
   `----
  x DocumentType
   ,-[$DIR/tests/html5lib-tests-fixture/tests9_dat.4.html:1:1]
 1 | <!DOCTYPE html><body><select><math></math></select>
   : ^^^^^^^^^^^^^^^
   `----
  x Child
  x Element
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests9_dat.4.html:1:1]
 1 | <!DOCTYPE html><body><select><math></math></select>
   :                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/tests9_dat.4.html:1:1]
 1 | <!DOCTYPE html><body><select><math></math></select>
   :                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests9_dat.4.html:1:1]
 1 | <!DOCTYPE html><body><select><math></math></select>
   :                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/tests9_dat.4.html:1:1]
 1 | <!DOCTYPE html><body><select><math></math></select>
   :                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
