Fix incompatibility with ZFA's "head".

In ZFA, the "head" (ZFA:0001114) corresponds to what Uberon calls the
"craniocervical region" (UBERON:0007811), comprising the head proper and
the neck. So we remap ZFA:0001114 to UBERON:0007811, rather than
UBERON:0000033).

Also, the axiom stating that 'pharyngeal arch' (UBERON:0002539) is part
of the 'embryonic head' (UBERON:0008816) is bogus, as some pharyngeal
arches are located in the neck rather than the head. So we create a new
term 'embryonic craniocervical region' to be the embryonic counterpart
of 'craniocervical region' (as 'embryonic head' is the embryonic
counterpart of 'head'), and rewrite the aforementioned axiom to state
that 'pharyngeal arch' is part of the 'embryonic craniocervical region'.

Combined together, these two changes fix about 80 unsatisfiable classes
in the merge product of Uberon and ZFA.

closes #379

src/ontology/uberon-edit.obo

@@ -1137,7 +1137,6 @@ xref: VHOG:0001644
 xref: WBbt:0005739
 xref: Wikipedia:Head
 xref: XAO:0003024
-xref: ZFA:0001114
 is_a: UBERON:0011676 ! subdivision of organism along main body axis
 relationship: has_skeleton UBERON:0003129 {gci_relation="part_of", gci_filler="NCBITaxon:7776"} ! skull
 relationship: in_taxon NCBITaxon:33213 ! Bilateria
@@ -53567,7 +53566,7 @@ relationship: developmentally_induced_by UBERON:0007690 {source="PMID:16313389"}
 relationship: has_developmental_contribution_from UBERON:0002342 {source="https://github.com/obophenotype/uberon/wiki/The-neural-crest"} ! neural crest
 relationship: in_taxon NCBITaxon:7711 {source="http://tolweb.org/Chordata/2499"} ! Chordata
 relationship: part_of UBERON:0008814 ! pharyngeal arch system
-relationship: part_of UBERON:0008816 {source="PMID:16313389"} ! embryonic head
+relationship: part_of UBERON:8450003 {source="PMID:16313389"} ! embryonic craniocervical region
 property_value: depiction "http://upload.wikimedia.org/wikipedia/commons/8/8b/Gray41.png" xsd:anyURI
 property_value: external_definition "One of a series of bony or cartilaginous arches that develop in the walls of the mouth cavity and pharynx of the embryo.[AAO]" xsd:string {date_retrieved="2012-06-20", external_class="AAO:0010359", ontology="AAO", source="NLM:branchial+arch"}
 property_value: homology_notes "A conserved feature of all vertebrate embryos is the presence of a series of bulges on the lateral surface of the head, the pharyngeal arches; it is within these structures that the nerves, muscles and skeletal components of the pharyngeal apparatus are laid down.[well established][VHOG]" xsd:string {date_retrieved="2012-09-17", external_class="VHOG:0000155", ontology="VHOG", source="DOI:10.1111/j.1469-7580.2005.00472.x Graham A, Okabe M and Quinlan R, The role of the endoderm in the development and evolution of the pharyngeal arches. J Anat (2005)", source="http://bgee.unil.ch/"}
@@ -123558,6 +123557,7 @@ xref: NCIT:C12418
 xref: SCTID:361355005
 xref: UMLS:C0460004 {source="ncithesaurus:Head_and_Neck"}
 xref: WikipediaCategory:Head_and_neck
+xref: ZFA:0001114
 is_a: UBERON:0000475 {source="MA"} ! organism subdivision
 relationship: has_part UBERON:0000033 ! head
 relationship: has_part UBERON:0000974 {gci_relation="part_of", gci_filler="NCBITaxon:32523"} ! neck
@@ -223135,6 +223135,15 @@ intersection_of: capable_of GO:0046903 ! secretion
 created_by: http://orcid.org/0000-0002-6095-8718
 creation_date: 2022-05-25T18:21:29Z
 
+[Term]
+id: UBERON:8450003
+name: embryonic craniocervical region
+def: "A craniocervical region that is part of an embryo." []
+intersection_of: UBERON:0007811 ! craniocervical region
+intersection_of: part_of UBERON:0000922 ! embryo
+relationship: dc-contributor https://orcid.org/0000-0002-6095-8718 ! Damien Goutte-Gattat
+property_value: dcterms-date "2024-09-12T14:40:00Z" xsd:dateTime
+
 [Term]
 id: UBERON:8470000
 name: placental blood