Add quotes around each item so that commas and brackets (as some results include them) don't break links/the frontmatter in general.
ex.
narrower: ["History--[period subdivision]--Philosophy","Foreign relations--Philosophy","Civilization--Philosophy","Politics and government--[period subdivision]--Philosophy","History--Philosophy","Politics and government--Philosophy"]
instead of
narrower: [History--[period subdivision]--Philosophy,Foreign relations--Philosophy,Civilization--Philosophy,Politics and government--[period subdivision]--Philosophy,History--Philosophy,Politics and government--Philosophy]
Add quotes around each item so that commas and brackets (as some results include them) don't break links/the frontmatter in general.
ex.
narrower: ["History--[period subdivision]--Philosophy","Foreign relations--Philosophy","Civilization--Philosophy","Politics and government--[period subdivision]--Philosophy","History--Philosophy","Politics and government--Philosophy"]
instead of
narrower: [History--[period subdivision]--Philosophy,Foreign relations--Philosophy,Civilization--Philosophy,Politics and government--[period subdivision]--Philosophy,History--Philosophy,Politics and government--Philosophy]