instruction:
Given a context passage, generate a question from the passage such that its answer is shortest continous span from the passage.
question:
OPS 5112 was launched at 10:34 UTC on 13 May 1978, atop an Atlas E/F carrier rocket with an SGS-1 upper stage.
answer:
On what date did OPS 5112 launch?


question:
That year the chocolate magnate Peter Ludwig agreed to endow 350 modern artworks--then valued at $45 million --and in return the City of Cologne committed itself to build a dedicated ''Museum Ludwig'' for works made after the year 1900.
answer:
The Museum Ludwig was named for whom?


question:
Peroxiredoxin-2 (PRDX-2) is an antioxidant and chaperone-like protein critical for cell function. This study examined whether the levels of lymphocyte PRDX-2 are altered over 1 month following ultra-endurance exercise. Nine middle-aged men undertook a single-stage, multi-day 233 km (145 mile) ultra-endurance running race. Blood was collected immediately before (Pre), upon completion/retirement (Post), and following the race at Day 1, Day 7 and Day 28. Lymphocyte lysates were examined for PRDX-2 by reducing and non-reducing SDS-PAGE with western blotting. In a sub-group of men who completed the race (n = 4), PRDX-2 oligomeric state (indicative of redox status) was investigated. Ultra-endurance exercise caused significant changes in lymphocyte PRDX-2 (F(4,32) 3.409, p = 0.020, (2) = 0.299): 7 days after the race, PRDX-2 levels in lymphocytes had fallen to 30% of pre-race values (p = 0.013) and returned to near-normal levels at Day 28. Non-reducing gels demonstrated that dimeric PRDX-2 (intracellular reduced PRDX-2 monomers) was increased in three of four race completers immediately post-race, indicative of an 'antioxidant response'. Moreover, monomeric PRDX-2 was also increased immediately post-race in two of four race-completing subjects, indicative of oxidative damage, which was not detectable by Day 7. Lymphocyte PRDX-2 was decreased below normal levels 7 days after ultra-endurance exercise. Excessive accumulation of reactive oxygen species induced by ultra-endurance exercise may underlie depletion of lymphocyte PRDX-2 by triggering its turnover after oxidation. Low levels of lymphocyte PRDX-2 could influence cell function and might, in part, explain reports of dysregulated immunity following ultra-endurance exercise.
answer:

What type of enzyme is peroxiredoxin 2 (PRDX2)?