Complex sentence: In 1965 Rudolf Kaiser continued development of the two-seat Ka 2 and Schleicher Ka 7 by introducing the ASK 13, using a mixture of materials including metal, wood and glassfibre.
Split into simpler sentences: In 1965 Rudolf Kaiser continued development of the two-seated Ka 2 and Schleicher Ka 7 by introducing the ASK 13. It uses a mixture of materials, including metal, wood and glassfibre.