Lookup [String,String]

Description

Finds all items in B whose first column matches A.

Input

• A [STRING]: a list of strings to be searched

• B [STRING,STRING]: a list of pairs to be searched with A

Output

• B1B2 [STRING,STRING]: B pairs, where the first column matches items in A

• B2 [STRING]: Bstrings, where the first column matches items inA`

Output scores can be aggregated and/or normalised.