From the given sentence, extract the phrase (often noun or verb) that carries the given relationship. The generated phrase should be present in the sentence.
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Question: Given Relationship: 'be language of', Sentence: 'Belarusian language East Slavic language of Belarus , spoken by some 10.2 million ... Belarusian features begin to appear in Church Slavonic manuscripts from the 14th ...'

Answer: language

Question: Given Relationship: 'be island in', Sentence: 'Cuba is the bigger island extension of the biggest Antilles .'

Answer: island

Question: Given Relationship: 'be prescription for', Sentence: 'Best price on Net for VIAGRA 100 , 50 mg Brand & Generic Viagra order prescription viagra 30x100mg = 99 Also in Stock : compare levitra viagra Viagra 100mg 90 female uk viagra Pills Only 179.00 , viaiagla 180 Pills only 309.00Order Online and Save money Today !'

Answer:
prescription