"What is the silicon?"
Translation:Τι είναι το πυρίτιο;
Just putting this out there. "Silicon" might be "πυρίτιο" (correct for sure!), but in every day GR one uses the word "σιλικόνη=silicon" when talking about the glue one uses for the "glue gun=πιστόλι σιλικόνης", or the white/beige stuff that comes out of a tube and used for insulation.
In this phrase tho there's the definitive article "the" used, which probably should have clued me about "silicon=πυρίτιο" I suppose.