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.

[EX Q]: Context: The Browns were making their first trip to San Diego since 2006. The game was back and forth, with neither team leading by more than one possession. The Chargers led 7-3 after the 1st quarter. On the Browns' first drive of the second quarter, QB Josh McCown threw a 34-yard touchdown pass to RB Duke Johnson to put the Browns up 10-7. The teams traded field goals, making it a 13-13 game at halftime. The Browns scored a field goal at the start of the 3rd quarter to go up 16-13. On the Chargers' next drive, QB Philip Rivers led the Chargers to a touchdown, going up 20-16 heading into the 4th quarter. After K Travis Coons kicked a field goal to cut the deficit to 20-19, Rivers led another touchdown drive to put the Chargers up 27-19. On the Browns' next drive, they reached the end zone, assisted by an incredible catch by TE Gary Barnidge on the Chargers' 1 yard line. They converted on the two point conversion to tie the game at 27-27 with just over 2 minutes remaining. The Chargers reached the Browns' 24 yard line with under 50 seconds to play. The Browns began to use timeouts until the Chargers faced 4th down with 2 seconds to play. After the Chargers called timeout, their kicker had an opportunity to win the game with a 39-yard field goal. The 39 yard game winning attempt was off to the right, and the game appeared to be on its way to overtime.. However, CB Tramon Williams was flagged for being offside during the play, giving the Chargers another attempt, this time from 34 yards. The field goal was converted, and the Chargers won 30-27. The Browns committed 12 penalties in the game, including this critical offside penalty. 
 Question: During which quarter did both teams score a field goal?
[EX A]: second

[EX Q]: Context: Sven Gerich The information up to 2007 was retrieved from Die Wiesbadener Oberburgermeister seit dem Bau des neuen Rathauses (1886) (The Wiesbaden Mayors since the construction of the new town mayor hall (1886) ) 
 Question: Who became the leader of Wiesbaden?
[EX A]: sven gerich

[EX Q]: Context: Questions of if and when protein structures change within cells pervade biology and include questions of how the cytoskeleton sustains stresses on cells--particularly in mutant versus normal cells. Cysteine shotgun labeling with fluorophores is analyzed here with mass spectrometry of the spectrin-actin membrane skeleton in sheared red blood cell ghosts from normal and diseased mice. Sheared samples are compared to static samples at 37C in terms of cell membrane intensity in fluorescence microscopy, separated protein fluorescence, and tryptic peptide modification in liquid chromatography-tandem mass spectrometry (LC-MS/MS). Spectrin labeling proves to be the most sensitive to shear, whereas binding partners ankyrin and actin exhibit shear thresholds in labeling and both the ankyrin-binding membrane protein band 3 and the spectrin-actin stabilizer 4.1R show minimal differential labeling. Cells from 4.1R-null mice differ significantly from normal in the shear-dependent labeling of spectrin, ankyrin, and band 3: Decreased labeling of spectrin reveals less stress on the mutant network as spectrin dissociates from actin. Mapping the stress-dependent labeling kinetics of - and -spectrin by LC-MS/MS identifies Cys in these antiparallel chains that are either force-enhanced or force-independent in labeling, with structural analyses indicating the force-enhanced sites are sequestered either in spectrin's triple-helical domains or in interactions with actin or ankyrin. Shear-sensitive sites identified comprehensively here in both spectrin and ankyrin appear consistent with stress relief through forced unfolding followed by cytoskeletal disruption. 
 Question: Alpha-spectrin and beta-spectrin subunits form parallel or antiparallel heterodimers?
[EX A]:
antiparallel