(
#comment
(let mr_source (DataSource 'yt 'plato))
(let x (Read! world mr_source (Key '('table (String 'Input1))) '('key 'subkey 'value) '()))
(let world (Left! x))
(let table1 (Right! x))
(let offset (Uint64 '5))
(let result (Extend table1 table1))
(let mr_sink (DataSink 'yt (quote plato)))
(let world (Write! world mr_sink (Key '('table (String 'Output))) result '()))
(let res_sink (DataSink 'result))
(let world (Write! world res_sink (Key) result '()))
(let world (Commit! world mr_sink))
(let world (Commit! world res_sink))
(return world)
)