###Answer the question from the input provided. Please answer from input only.

###Input: In another incident, around 1177, he was captured in a raid and held prisoner by his father's former allies, the Tayichi'ud. The Tayichi'ud enslaved Temüjin (reportedly with a cangue, a sort of portable stocks), but with the help of a sympathetic guard, the father of Chilaun (who later became a general of Genghis Khan), he was able to escape from the ger (yurt) in the middle of the night by hiding in a river crevice.[citation needed] It was around this time that Jelme and Bo'orchu, two of Genghis Khan's future generals, joined forces with him. Temüjin's reputation also became widespread after his escape from the Tayichi'ud.

At this time, none of the tribal confederations of Mongolia were united politically, and arranged marriages were often used to solidify temporary alliances. Temüjin grew up observing the tough political climate of Mongolia, which included tribal warfare, thievery, raids, corruption, and continual acts of revenge carried out between the various confederations, all compounded by interference from foreign forces such as the Chinese dynasties to the south. Temüjin's mother Hoelun taught him many lessons about the unstable political climate of Mongolia, especially the need for alliances.

As previously arranged by his father, Temüjin married Börte of the Onggirat tribe when he was around 16 in order to cement alliances between their respective tribes. Soon after Börte's marriage to Temüjin, she was kidnapped by the Merkits and reportedly given away as a wife. Temüjin rescued her with the help of his friend and future rival, Jamukha, and his protector, Toghrul Khan of the Keraite tribe. She gave birth to a son, Jochi (1185–1226), nine months later, clouding the issue of his parentage. Despite speculation over Jochi, Börte would be Temüjin's only empress, though he did follow tradition by taking several morganatic wives.

Börte had three more sons, Chagatai (1187—1241), Ögedei (1189—1241), and Tolui (1190–1232). Genghis Khan also had many other children with his other wives, but they were excluded from the succession. While the names of sons were documented, daughters were not. The names of at least six daughters are known, and while they played significant roles behind the scenes during his lifetime, no documents have survived that definitively provide the number or names of daughters born to the consorts of Genghis Khan.

Temüjin began his ascent to power by offering himself as an ally (or, according to other sources, a vassal) to his father's anda (sworn brother or blood brother) Toghrul, who was Khan of the Keraites, and is better known by the Chinese title "Wang Khan", which the Jurchen Jin dynasty granted him in 1197. This relationship was first reinforced when Börte was captured by the Merkits. Temüjin turned to Toghrul for support, and in response, Toghrul offered his vassal 20,000 of his Keraite warriors and suggested that he also involve his childhood friend Jamukha, who had himself become Khan (ruler) of his own tribe, the Jadaran.



###Question: What is an anda?

###Answer: {'answer':'sworn brother or blood brother'}