 There are thousands of manuscripts which are set to be read in this manner, and works of Sophocles, Euripides and Hesiod which have been unavailable for well over a thousand years have already been recovered.
<clarity>  There are thousands of manuscripts which are set to be read in this manner, and works of Sophocles, Euripides and Hesiod which have been unavailable for well over a thousand years have already been recovered.
 There are thousands of which are set to be read in this manner, and works of Sophocles, Euripides and Hesiod which have been unavailable for well over a thousand years have already been recovered.