Input:
Are these paraphrases?
The most active treatment method at present was the preferred medication .
The most active treatment method at the time was preferred medication .
Output:
[yes]

Input:
Are these paraphrases?
In some species , the withdrawn invert and lophophore are protected by an operculum ( '' lid '' ) , which is closed by muscles and opened by fluid pressure .
In some species the retracted invert and lophophore are protected by an operculum ( '' lid '' ) , which is closed by muscles and opened by fluid pressure .
Output:
[yes]

Input:
Are these paraphrases?
However , mice survived with a non-working copy of the single TWIST - Gens .
However , mice with a single copy of the non-working TWIST gene survived .
Output:
[no]