Pair down results based on input

Hi All,

I am trying to find an easy way of paring down a list based on input from another cell. I don't know if a VLookup or a MATCH of some kind is in order. I could use some help. Attached is a very simple sample of what I would like to see happen. I have Column A with input that is gathered elsewhere in my workbook. What I need is to match the Modality_Long (Column B) to the input of Column A and report or copy the matched up field to Column C. I am sorry if the discription is confusing. Hopefully the sample will help.

Thank you,

Patrick