user: Question: When Nd 2 Fe 14 B (bonded) is the magnet how many measurements of tc (°c)?
Columns: ['Magnet', 'B r (T)', 'H ci (kA/m)', '(BH) max (kJ/m 3 )', 'T c (°C)']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Nd 2 Fe 14 B (sintered)', '1.0–1.4', '750–2000', '200–440', '310–400']
SQL:

assistant: SELECT COUNT("T c (°C)") FROM "Table" WHERE "Magnet" = 'Nd 2 Fe 14 B (bonded)';