Note Convert, fix, query and edit records in JSON, YAML, TOML, XML, CSV and TSV.

Note XPath, element lookup, citations and rendering over real government XML.

Note CSS cascade, specificity, selector matching, shorthand and syntax-error tasks.

Note Convert and query Wikidata entities in N-Triples, Turtle, JSON-LD and RDF/XML; build SKOS schemes.

Note SVG tasks: bounding boxes, hit tests, areas, edits and SVG/JSON conversion.

Note Trace what a specific Python call does; answers obtained by running the code in a sandbox.

Note Extract via CSS selectors, edit, convert to and from Markdown, and find errors in HTML.

Note Execution-verified Python comprehension questions over ALEA's own synthetic code.

Note Raw synthetic code files in C, Rust, TypeScript and Python, with tests, fixtures and walkthroughs.