(1)"koto requires 13 sturdy bridges"12本以上なので〇 (2)これはsavanna elephantsの説明なので✕ (3)"Japanese music has never been static" なので✕ (4)"Nishihara also reached out to materials scientists..."その後もproffesor と電話しているので✕ (5)"I will try to come as close..."なので、"successfully invented" a "perfect alternative material"は✕ と思ったので12222かな?と思いました