{%- assign resource=site.documents | where: “ref”, include.to | where: “lang”, include.lang -%} {%- unless resource -%}
{%- assign resource=site.pages | where: "ref", include.to | where: "lang", include.lang -%}
{%- endunless -%} {%- if resource -%} {{resource.first.resource.title}} {%- endif -%}