ontology: test
subsetdef: foo "foo"

[Term]
id: ONT:1
subset: foo

[Term]
id: ONT:2
relationship: part_of ONT:1

[Term]
id: ONT:3
relationship: part_of ONT:2

[Term]
id: ONT:4
relationship: part_of ONT:3

[Term]
id: ONT:5
is_a: ONT:4
subset: foo

[Typedef]
id: part_of
is_transitive: true
xref: BFO:0000050

[Typedef]
id: overlaps
xref: RO:0002131
holds_over_chain: BFO:0000051 BFO:0000050
