<human>: Q: Dragonflys use what kind of propulsion?
 A: Other insects such as the Rove beetle Stenus are known to emit pygidial gland secretions that reduce surface tension making it possible for them to move on the surface of water by Marangoni propulsion (also known by the German term Entspannungsschwimmen).
 Does the answer correctly answer the question

OPTIONS:
- yes
- no
<bot>: no