code year
code
year
number
text number
a 1927
what was the only year to use the code ch ?
WP VBD-AUX DT JJ NN TO VB DT NN NN .
1930
Keyword Column Keyword Keyword Keyword Column Keyword Literal.String
select c2 from w where c1 = 'ch'
None None None None Column None None None Column Literal None
c2 c1