Rate the similarity of the following two sentences
A dog bounds across the brown grass.
Two dogs bound across the grass.

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3

Rate the similarity of the following two sentences
Obama signs up for Obamacare
Americans scramble to sign up for Obamacare by deadline

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1

Rate the similarity of the following two sentences
Egypt lets Mubarak PM back in presidential race
Egypt confirms Mubarak's PM back in presidency race

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4