Robot couple Xiaolan (L) and Xiaotao carry trays of food at a restaurant in Jinhua, Zhejiang province, China, May 18, 2015. The restaurant, which opened on Monday, has two robots delivering food for customers. The robots were designed as a couple, Xiaolan and Xiaotao, according to local media. (Photo by Reuters/Stringer)

A new species of monkey found in the Democratic Republic of the Congo and identified as Lesula (Cercopithecus lomamiensis) is seen in this undated photograph from an article published September 12, 2012 in the science journal PLOS One. The monkey was first seen in 2007 by researchers John and Terese Hart of the Peabody Museum of Natural History at Yale Research Project. The finding of C. lomamiensis represents only the second new species of African monkey to be discovered in the past 28 years, according to the research article. (Photo by Hart J. A., Detwiler K. M., Gilbert C. C./Reuters)

A Palestinian boy carries dates from palm trees during harvest season in southern Gaza September 25, 2016. (Photo by Ibraheem Abu Mustafa/Reuters)

A Ukrainian serviceman fires a 2S7 Pion self-propelled gun during military exercises near the village of Divychky in Kiev region, Ukraine, October 21, 2016. (Photo by Valentyn Ogirenko/Reuters)

A combination picture shows Aleppo's Umayyad mosque, Syria, before it was damaged on March 12, 2009 (top) and after it was damaged (bottom) December 13, 2016. (Photo by Omar Sanadiki/Reuters)

Members of Pakistan's Christian minority attend a service ahead of Christmas in Lahore, Pakistan, 22 December 2021. Pakistan is a majority Sunni Muslim country and home to four million Christians out of a total population of around 200 million people. (Photo by Rahat Dar/EPA/EFE)

The Arizona Cardinals cheerleaders perform during the second half of an NFL football game against the Indianapolis Colts, Saturday, December 25, 2021, in Glendale, Ariz. (Photo by Ross D. Franklin/AP Photo)

Youths smeared in coloured powder and dressed as Lord Krishna (L) and deity Radha (R) celebrate with others the Holi festival, the Hindu spring festival of colours, in Kolkata on March 17, 2022. (Photo by Dibyangshu Sarkar/AFP Photo)