The Museo Torres García is located in the Old Town, and exhibits Joaquín Torres García's unusual portraits of historical icons and cubist paintings akin to those of Picasso and Braque. The museum was established by Manolita Piña Torres, the widow of Torres Garcia, after his death in 1949. She also set up the García Torres Foundation, a private non-profit organization that organizes the paintings, drawings, original writings, archives, objects and furniture designed by the painter as well as the photographs, magazines and publications related to him.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): The Museo Torres Garcia exhibits whose unusual portraits? 
Ah, so.. Joaquín Torres García

The light from LEDs can be modulated very quickly so they are used extensively in optical fiber and free space optics communications. This includes remote controls, such as for TVs, VCRs, and LED Computers, where infrared LEDs are often used. Opto-isolators use an LED combined with a photodiode or phototransistor to provide a signal path with electrical isolation between two circuits. This is especially useful in medical equipment where the signals from a low-voltage sensor circuit (usually battery-powered) in contact with a living organism must be electrically isolated from any possible electrical failure in a recording or monitoring device operating at potentially dangerous voltages. An optoisolator also allows information to be transferred between circuits not sharing a common ground potential.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"):  What does an optoisolator don't do?
Ah, so.. unanswerable

Although many of FBI's functions are unique, its activities in support of national security are comparable to those of the British MI5 and the Russian FSB. Unlike the Central Intelligence Agency (CIA), which has no law enforcement authority and is focused on intelligence collection overseas, FBI is primarily a domestic agency, maintaining 56 field offices in major cities throughout the United States, and more than 400 resident agencies in lesser cities and areas across the nation. At an FBI field office, a senior-level FBI officer concurrently serves as the representative of the Director of National Intelligence.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What kind of agency is the FBI?
Ah, so..
FBI is primarily a domestic agency