Text: Heat lightning, sometimes known as silent lightning or dry lightning (mainly used in the American south; not to be confused with dry thunderstorms, which are also often called dry lightning), is a misnomer used for the faint flashes of lightning on the horizon or other clouds from distant thunderstorms that do not appear to have accompanying sounds of thunder.

Question: is there such a thing as heat lightning?

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Answer: no

Text: Other types of auditory hallucination include exploding head syndrome and musical ear syndrome. In the latter, people will hear music playing in their mind, usually songs they are familiar with. This can be caused by: lesions on the brain stem (often resulting from a stroke); also, sleep disorders such as narcolepsy, tumors, encephalitis, or abscesses. This should be distinguished from the commonly experienced phenomenon of getting a song stuck in one's head. Reports have also mentioned that it is also possible to get musical hallucinations from listening to music for long periods of time. Other reasons include hearing loss and epileptic activity.

Question: is it normal to hear music in your head?

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Answer: no

Text: American car manufacturers Nash (in 1949) and Ford (in 1955) offered seat belts as options, while Swedish Saab first introduced seat belts as standard in 1958. After the Saab GT 750 was introduced at the New York Motor Show in 1958 with safety belts fitted as standard, the practice became commonplace.

Question: did cars have seat belts in the 1950s?

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Answer: yes

Text: Harry Potter and the Escape from Gringotts is an indoor steel roller coaster at Universal Studios Florida, a theme park located within the Universal Orlando Resort. Similar to dark rides, the roller coaster utilizes special effects in a controlled-lighting environment and also employs motion-based 3-D projection of both animation and live-action sequences to enhance the experience. The ride, which is themed to the Gringotts Wizarding Bank, became the flagship attraction for the expanded Wizarding World of Harry Potter when it opened on July 8, 2014.

Question: is escape from gringotts ride a roller coaster?

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Answer:
yes