In which country do practicing Buddhists constitute the largest part of population?

None. There are no common Thai sur­names. Surnames were largely in­tro­duced to Thai culture only by the 1913 Surname Act. Under Thai law, only one family can use any given surname: any two people of the same surname must be related, and it is very rare for two people to share the same full name.

In Thai­land. River Kwai in Thailand today, but there was no such river when the "bridge on the River Kwai" was created. The movie tells a fic­tion­al story, and the film crew built a wooden bridge on the Mae Klong river. This part of the river was then renamed Khwae Yai to bring ge­o­graph­i­cal fact more in line with the movie.

City of Lions. The English name of Sin­ga­pore is derived from the Malay word Sin­ga­pu­ra (lit. Lion City), hence the cus­tom­ary ref­er­ence to the nation as the Lion City. Lions probably never lived there; the beast seen by Sang Nila Utama, who founded and named ancient Sin­ga­pore, was most likely a tiger.

Finland. There are no places to practice alpine skiing in Finland, as the country is flat. In the whole history of the Olympic Games, Finland won only one medal (Tanja Pouti­ainen, silver in giant slalom in 2006).