A reveller of the Salgueiro samba school performs during the second night of Rio's Carnival at the Sambadrome in Rio de Janeiro, Brazil, on February 13, 2018. (Photo by Mauro Pimentel/AFP Photo)

A reveller from Salgueiro performs during the second night of the Carnival parade at the Sambadrome in Rio de Janeiro, Brazil on February 13, 2018. (Photo by Sergio Moraes/Reuters)

Soldier boys at Fort Dix, N.J., learn something about guns during their working hours, as they show their girlfriends at a camp dance, December 13, 1940. In front row, playing with the coin amusement gun, from left: Pvt. Tom D'Amato of West Orange; Rose Sinkewicz, behind gun site, of Trenton; Julia Ivans of Trenton, and Pvt. Vernon Landers of Kearney. Back row: Pvts. William Sargent and William Corlies of Philadelphia. (Photo by AP Photo)

British theoretical physicist Stephen Hawking, Cambridge University Professor and Fellow, circa 1985. Stephen Hawking, the brightest star in the firmament of science, whose insights shaped modern cosmology and inspired global audiences in the millions, has died aged 76. (Photo by Gemma Levine/Getty Images)

(L-R) Young Paris, Lionel Richie, Isabela Moner and Austin Butler attend the Jeremy Scott Fashion Show during New York Fashion Week at Spring Studios on September 8, 2017 in New York City. (Photo by Ben Gabbe/Getty Images)

Models present creations from The Blonds Spring/Summer 2018 collection during New York Fashion Week in New York City, U.S. September 12, 2017. (Photo by Brendan McDermid/Reuters)

A model displays a creation by Portuguese fashion designer Filipe Faisca in his runway show at Lisbon Fashion Week, at Carlos Lopes Pavillion in Lisbon, Portugal, 08 October 2017. (Photo by Miguel A. Lopes/EPA/EFE)

A pedestrian carries an umbrella as they stroll past an advertisment as a rainstorm moves through Sacramento, Calif., Wednesday, February 13, 2019. Rain is falling widely in Northern California and is expected to spread south. (Photo by Rich Pedroncelli/AP Photo)