Teacher:You are given the conttent of a table in the input (row by row). Generate an unambiguous question based on the information present in the table, such that: 1) It's answer is unique and is in the given table, 2) Its answer is a contiguous text span from the table. Avoid creating questions that can be answered correctly without reading/understanding the table
Teacher: Now, understand the problem? Solve this instance: Table: ['Type', 'Manufacturer', 'Numbers', 'Year built', 'Quantity built', 'Power (horsepower)', 'Max Speed (km/h)', 'Note']. ['RHN', 'Hitachi', '1011-1048 (power cars) 11-48 (trailer cars)', '1967', '38+38', '220', '90', 'Now use as a Northeastern line commuter train.']. ['RTS', 'Tokyu', 'D9-D16 (power cars) TS4-TS7 (center/trailer cars)', '1971', '8+4', '220', '70', 'Ex-Mahachai railways, to be refurbished. Similar bodyshell of THN and NKF but with different formation (power car-2 trailer cars).']. ['THN', 'Tokyu, Hitachi and Nippon Sharyo', '1101-1140', '1983', '40', '235', '105', 'Similar to NKF.']. ['NKF', 'Nippon Sharyo, Hitachi, Fuji Heavy Industries,Kawasaki Heavy Industries, Niigata Tekkousho, and Kinki Sharyo', '1201-1264, (center) 2101-2112', '1985', '64+12', '235', '105', 'Similar to THN, but with plastic chairs.']. ['ASR (Class 158 Express Sprinter)', 'BREL, Derby Works', '2501-2512, (center) 2113-2120', '1991', '12+8', '285', '120', 'Metre gauge version of British Rail Class 158, with different gangways and couplers, and with inward-opening slam doors instead of plug doors. 3-car set until 2011, when all were refurbished with new seats, vinyl floors, an extra coach and new livery.']. ['APD .20', 'Daewoo Heavy Industries', '2513-2524 (center) 2121-2128', '1995', '10+8', '298', '120', 'First batch, narrow body.']. ['APD .60', 'Daewoo Heavy Industries', '2525-2544', '1996', '20+40', '298', '120', 'Second batch, wide body.']
Student:
what is the top speed of the rhn?