A (crystal glass) can be sapphire.Logical formLearned from9 sentences. A light can be sapphire.Logical formLearned from8 sentences. Water can be sapphire.Logical formLearned from8 sentences. A female can be sapphire.Logical formLearned from8 sentences. Skies can be sapphire.Logical formLearned from8 sentences. An oscillator can be sapphire.Logical formLearned from7 sentences. Ones can be sapphire.Logical formLearned from7 sentences. A combination can be constituted-of-or-filled-with sapphire crystal.Logical formLearned from7 sentences. Stones can be sapphire.Logical formLearned from6 sentences. A crystal can be sapphire.Logical formLearned from6 sentences. A (crystal screen) can be sapphire.Logical formLearned from6 sentences. Depths can be sapphire.Logical formLearned from6 sentences. A joust can be sapphire.Logical formLearned from6 sentences. A hue can be sapphire.Logical formLearned from6 sentences. A technology can be sapphire.Logical formLearned from5 sentences.