1. A few organic silicones are used as lubricants.
2. Only nuclearpowered vehicles are suitable for deepspace exploration.
3. Comets are the only heavenly bodies with tails.
4. There is a giant star in the Tarantula Nebula.
5. If an activity emits methane, then it contributes to climate change.
6. No shellfish except oysters make pearls.
7. Only diabetics require insulin treatments.
8. The electroscope is a device for detecting static electricity.
9. Occasionally there are concerts in Central Park.
10. Berlin was the setting for the 1936 Olympic Games.
11. The Kentucky Derby is never run in January.
12. The only way to get rid of a temptation is to yield to it.
13. Where there's smoke, there's fire.
14. Lunar eclipses do not occur unless the moon is full.
15. Radio transmissions are disrupted whenever sunspot activity increases.
Translate the following into standard-form categorical propositions.