Using "OR" logic in GraphQL Filters?

I’m not seeing it in the docs so I figured I’d ask. Can you combine multiple arguments in a GraphQL filter with OR?

Trying to return an array of “Site” entities if any site’s “Production Domain” OR “Stage Domain” are a match to a “Form Domain” variable. Something along the lines of this:

 const formDomain = entity['Form Domain'];

const matchSites = await fibery.graphql("Fibery Database", `{findSites(productionDomain: {is: "${formDomain}"} or stageDomain: {is: "${formDomain}"}){id}}`);