andries what i wrote is true vassyana has already given many citations for that however every line in wikipedia does not have to have a citation citations are needed for figures statistics and comparitive measures like oldest fastest biggest etc i will give you an example from the eiffel tower article the very first line says the eiffel tower is an iron tower built on the champ de mars beside the river seine in paris france the tower has become an global icon of france it does not have any citation because it is so very true that a citation is unnecessary and needless the same is the case in this article