How can I query articles in BigQuery GDELT that make mention of a keyword such as "climate change" (despite the lack of a keyword column)? Admittedly, I am a complete novice at working with databases and may be misunderstanding something simple, so please feel free to point anything out.
I am attempting to query articles pertaining to keywords of interest in order to trace the provenance of a query claim. I would use the GDELT API, which supports fast querying with keywords, but it only returns articles in the past 3 months. The nature of the problem I'm interested in likely requires locating information potentially years ago. Thus I figured I could try querying the public GDELT Events database in Google BigQuery, however I am confused how to query by keyword, as there is no column/feature for keywords or event content.