Sentence:  New obligational authority for 1961 recommended in this budget for aircraft procurement ( excluding amounts for related research and construction ) totals $ 4753 million , which <WSD>is</WSD> $ 1390 million below that enacted for 1960 . 
Meaning of the word marked with <WSD> tags:  have the quality of being; (copula, used with an adjective or a predicate noun)