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SARI

Keep precision

Report a typo

Let's consider the fragment of the synthetic system from the theory:

	Notation	Sentence	Unigrams
INPUT	$I$	About 95 species are currently accepted	`['About', '95', 'species', 'are', 'currently', 'accepted']`
REF-1	$R1$	About 95 species are currently known	`['About', '95', 'species', 'are', 'currently', 'known']`
REF-2	$R2$	About 95 species are now accepted	`['About', '95', 'species', 'are', 'now', 'accepted']`
OUTPUT	$O$	About 95 species are now agreed	`['About', '95', 'species', 'are', 'now', 'agreed']`

Calculate the precision for keeping of the word 'species'. Note that you are only considering the unigrams in this case.

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