  x Document
   ,-[$DIR/tests/html5lib-tests-fixture/tests9_dat.5.html:1:1]
 1 | <!DOCTYPE html><body><select><option><math></math></option></select>
   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests9_dat.5.html:1:1]
 1 | <!DOCTYPE html><body><select><option><math></math></option></select>
   : ^^^^^^^^^^^^^^^
   `----
  x DocumentType
   ,-[$DIR/tests/html5lib-tests-fixture/tests9_dat.5.html:1:1]
 1 | <!DOCTYPE html><body><select><option><math></math></option></select>
   : ^^^^^^^^^^^^^^^
   `----
  x Child
  x Element
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests9_dat.5.html:1:1]
 1 | <!DOCTYPE html><body><select><option><math></math></option></select>
   :                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/tests9_dat.5.html:1:1]
 1 | <!DOCTYPE html><body><select><option><math></math></option></select>
   :                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests9_dat.5.html:1:1]
 1 | <!DOCTYPE html><body><select><option><math></math></option></select>
   :                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/tests9_dat.5.html:1:1]
 1 | <!DOCTYPE html><body><select><option><math></math></option></select>
   :                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests9_dat.5.html:1:1]
 1 | <!DOCTYPE html><body><select><option><math></math></option></select>
   :                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/tests9_dat.5.html:1:1]
 1 | <!DOCTYPE html><body><select><option><math></math></option></select>
   :                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
