Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.
One example: Context: Architecturally, the school has a Catholic character. Atop the Main Building's gold dome is a golden statue of the Virgin Mary. Immediately in front of the Main Building and facing it, is a copper statue of Christ with arms upraised with the legend 'Venite Ad Me Omnes'. Next to the Main Building is the Basilica of the Sacred Heart. Immediately behind the basilica is the Grotto, a Marian place of prayer and reflection. It is a replica of the grotto at Lourdes, France where the Virgin Mary reputedly appeared to Saint Bernadette Soubirous in 1858. At the end of the main drive (and in a direct line that connects through 3 statues and the Gold Dome), is a simple, modern stone statue of Mary. 
 Question: To whom did the Virgin Mary allegedly appear in 1858 in Lourdes France?
Solution is here: Saint Bernadette Soubirous
Explanation: This is the correct answer. Because the question is asking for the name of the person and following sentence from the passage answers it: It is a replica of the grotto at Lourdes, France where the Virgin Mary reputedly appeared to Saint Bernadette Soubirous in 1858.

Now, solve this: Context: The enzyme telomerase is activated in 80-90% of all human malignancies and immortal cell lines, where it functions to maintain the integrity of chromosomal-end structures called telomeres. Telomerase enzyme activity can be detected in whole cell lysates by a polymerase chain reaction (PCR)-based method referred to as the telomeric repeat amplification protocol (TRAP). The TRAP assay involves extension of an oligonucleotide through telomerase-mediated enzymatic addition of telomeric DNA repeats and subsequent PCR amplification of the extension products. While the TRAP assay as originally developed utilizes radioactively labelled nucleotides, protocols are provided herein for nonradioactive versions of the TRAP assay, with options for either qualitative assessment of TRAP products by polyacrylamide gel electrophoresis (standard TRAP), or quantitative analysis by real-time PCR (Q-TRAP). The Q-TRAP method poses the additional advantages of exquisite sensitivity, rapidity, and potential for adoption to a high-throughput format. 
 Question: What is the aim of the TRAP assay?
Solution:
telomerase enzyme activity can be detected in whole cell lysates by a polymerase chain reaction (pcr)-based method referred to as the telomeric repeat amplification protocol (trap).