ontology: xref-need-of-repair

[Term]
id: GO:1
name: leaf node
is_a: GO:2

[Term]
id: GO:2
name: original parent
is_obsolete: true
replaced_by: GO:3
xref: FOO:1

[Term]
id: GO:3
name: replacement parent

[Term]
id: GO:4
name: other term
is_obsolete: true
replaced_by: GO:3
xref: FOO:2
