Background: Donald Christopher Barber (born 17 April 1930) is an English jazz musician, best known as a bandleader and trombonist. As well as scoring a UK top twenty trad jazz hit, he helped the careers of many musicians, notably the blues singer Ottilie Patterson, who was at one time his wife, and vocalist/banjoist Lonnie Donegan, whose appearances with Barber triggered the skiffle craze of the mid-1950s and who had his first transatlantic hit, "Rock Island Line", while with Chris Barber's band. His providing an audience for Donegan and, later, Alexis Korner makes Barber a significant figure in the British rhythm and blues and "beat boom" of the 1960s.
Context: The 2017 line up is; Chris Barber and Bob Hunt (trombones); Mike Henry and Pete Rudeforth (trumpets), Bert Brandsma, Nick White and Ian Killoran (clarinets and alto sax, tenor sax, baritone sax). John Watson (drums), John Day (double bass), Joe Farler (banjo & guitar) Pat Halcox, trumpeter with the Chris Barber Band since 31 May 1954, retired after playing his last gig with the Big Chris Barber Band on 16 July 2008. Halcox and Barber were together in the band for 54 years - the longest continuous partnership in the history of jazz, exceeding even that of Duke Ellington and Harry Carney (48 years between 1926 and 1974). Tony Carter (reeds) also left the band at this time. Vic Pitt (double bass) retired in January 2007 after 30 years with the band.  His feature duet with the drummers of the day - "Big Noise From Winnetka" was not only a feature of the Barber concerts, but also his time with the Kenny Ball band immediately before. When Amy Roberts joined the band in 2011, she was still a student at Royal Northern College of Music and thus not always able to be present. On several tours Bert Brandsma (reeds) replaced her. Brandsma joined as a permanent member in 2012.  At St Luke's, London, on 9 June 2007 Barber appeared in the horn section of Nick Lowe's band during a concert. In 2008 Barber, along with Eric Clapton and others, were involved in a new co-operative record company, Blues Legacy. On 23 July 2009, Barber, Bilk and Ball played a one-off concert at Indigo2 at the O2 in Greenwich. The concert was presented by the British Music Experience. He performed at De Doelen in Rotterdam, the Netherlands, on 12 December 2010.
Question: Did he perform after this?
Answer: He performed at De Doelen in Rotterdam, the Netherlands, on 12 December 2010.

Problem: Background: The Master is a recurring character in the British science fiction television series Doctor Who and its associated spin-off works. The character is a renegade alien Time Lord and the archenemy of the title character the Doctor. The Master has been played by multiple actors since the character's introduction in 1971.
Context: Unlike the Doctor, the Master does not usually have companions. There have been times when he made exceptions, though in his case they are not so much "companions" as "tools". In Castrovalva, the Doctor's companion Adric was abducted by the Master and forced to create a block transfer computation. Later, in The King's Demons, Kamelion is controlled by the Master before the Doctor steals him away, with the Master regaining control of Kamelion in Planet of Fire. In the second episode of The Ultimate Foe, Sabalom Glitz chose to go with the Master in search of Time Lord secrets.  In the 1996 television movie, Chang Lee helps the Master because he has been duped into believing that the Doctor had stolen his body. When Lee begins to realise the truth behind the Master, his loyalty begins to falter, therefore the Master attempts to kill him without hesitation. In promotional media surrounding the movie, Lee is depicted more as a companion to the Eighth Doctor (alongside Grace Holloway), and was referred to as such in a documentary series released as part of the 50 year anniversary celebrations, The Doctors Revisited - The Eighth Doctor.  In "Utopia", Chantho plays a similar companion role to the Professor Yana persona. Chantho states that she has been with him for 17 years as a "devoted assistant". Later, when the Master persona resurfaces, he berates her for never freeing him from his confinement and the two fatally wound one another, resulting in Chantho's death and the Master's regeneration.  In "The Sound of Drums", the Master, as Harold Saxon, is married to Lucy Saxon, to whom he refers at one point as his "faithful companion". Lucy is aware of the nature of the Master's plans yet is still loyal to him. She has travelled with him to Utopia, the end of the universe, and thus believes "there's no point to anything." Their relationship appears to be non-platonic; they kiss quite often and it seems as though their marriage is more than just a pretence. Lucy comments, "I made my choice, for better or for worse." In "Last of the Time Lords" she is still present, but showing signs of apparent physical abuse, and her loyalty towards him begins to waver. She shoots the Master at the climax of the story, killing him. She is imprisoned, but when the Master's coven made the preparations for his resurrection in The End of Time, she is forced into giving the Master's biometric signature on her lips to complete the ritual. Having foreseen his return, Lucy threw a vial containing a chemical to disrupt the resurrection, killing herself in the resulting explosion while only succeeding in giving the Master a tentative life.  Although not a companion in the traditional sense, the Master allied himself with another evil renegade Time Lord, the Rani, in The Mark of the Rani to thwart the Doctor. The Master has also been known to ally himself with other villains of the series, including the Daleks, the Cybermen and the Autons. None of these alliances lasted past the Master achieving his own aims, or his being stopped by the Doctor.
Question: Who were some of his companions?
Answer:
Kamelion