Given a sentence in Spanish, provide an equivalent paraphrased translation in English that retains the same meaning both through the translation and the paraphrase.
One example: La temporada de la NBA de 1975: 76 fue la 30ª temporada de la National Basketball Association.
Solution is here: The 1975 -- 76 season of the National Basketball Association was the 30th season of the NBA .
Explanation: This is a correct and accurate translation from Spanish to English because the translated paraphrase retains the main message that between the years 1975-1976, the 30th NBA season occurred.

Now, solve this: Una fibra sensorial especializada es un órgano nuclear contenido en un músculo.
Solution:
A specialized sensory chain fiber is a nuclear organ contained within a muscle .