search publications in title_abstract_only for "(Trade Restrictions AND SDG) OR (Trade Restrictions AND MDG) AND Bulgaria "
    where (year in [2000:2018]) 
    return publications [title+doi+journal+type+issue+volume+pages+doi+times_cited] sort by times_cited limit 20
    return in "facets"
    funders[name + country_name] as "entity_funder" 
    return in "facets" research_orgs[id+name] limit 20
    return in "facets" researchers[id+first_name+last_name]  limit 20