Create a set of triples that describes the content in the following sentence.

The notation when the crystal structure is tetragonal and the formula is bi 2 sr 2 cacu 2 o 8 is bi-2212
Bi 2 Sr 2 CaCu 2 O 8 NOTATION Bi-2212
Bi 2 Sr 2 CaCu 2 O 8 CRYSTAL_STRUCTURE Tetragonal