With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: Brezhnev's patron Khrushchev succeeded Stalin as General Secretary, while Khrushchev's rival Georgy Malenkov succeeded Stalin as Chairman of the Council of Ministers. Brezhnev sided with Khrushchev against Malenkov, but only for several years. In February 1954, he was appointed second secretary of the Communist Party of the Kazakh SSR, and was promoted to General Secretary in May, following Khrushchev's victory over Malenkov. On the surface his brief was simple: to make the new lands agriculturally productive. In reality, Brezhnev became involved in the development of the Soviet missile and nuclear arms programs, including the Baykonur Cosmodrome. The initially unproductive Virgin Lands Campaign soon became successful and solved the growing Soviet food crisis. Brezhnev was recalled to Moscow in 1956. The harvest in the years following the Virgin Lands Campaign was disappointing, which would have hurt his political career had he remained in Kazakhstan.
text_B: The Virgin Lands Campaign worked to solve the food crisis?
YES.