Sentence:  The Armed Forces Epidemiological Board agreed to submit each month a report for one of its 12 commissions , so that each commission will report once a year on some phase of its work calculated to <WSD>be</WSD> of particular interest and value to medical officers of the Armed Forces . 
Meaning of the word marked with <WSD> tags:  have the quality of being; (copula, used with an adjective or a predicate noun)