Given a sentence and two mentions from the text (arguments), indicate a phrase (a verb or noun phrase) that describes the relationship between the provided arguments.

Sentence: 'CEO reports to the Board of Directors and works closely with the chair of the Board , members of the Board , and the leadership of the Wyoming Game and Fish Department and the Game and Fish Commission .', Argument/Subject 1: 'ceo', Argument/Subject 2: 'board'
report to

Sentence: 'The Board in its discretion may appoint such other officers and agents , including Vice Presidents , Assistant Secretaries and Assistant Treasurers , as it shall deem necessary , who shall hold their offices for such terms and shall exercise such powers and perform such duties as shall be determined by the Board .', Argument/Subject 1: 'board', Argument/Subject 2: 'president'
appoint

Sentence: 'Penicillin was discovered by Alexander Fleming in the late 1920s but was not purified until the 1940s .', Argument/Subject 1: 'penicillin', Argument/Subject 2: 'alexander fleme'

be discover by