Answer the question from the given passage. Your answer should be directly extracted from the passage, and it should be a single entity, name, or number, not a sentence.

Passage: Evolution of the adaptive immune system occurred in an ancestor of the jawed vertebrates. Many of the classical molecules of the adaptive immune system (e.g., immunoglobulins and T cell receptors) exist only in jawed vertebrates. However, a distinct lymphocyte-derived molecule has been discovered in primitive jawless vertebrates, such as the lamprey and hagfish. These animals possess a large array of molecules called Variable lymphocyte receptors (VLRs) that, like the antigen receptors of jawed vertebrates, are produced from only a small number (one or two) of genes. These molecules are believed to bind pathogenic antigens in a similar way to antibodies, and with the same degree of specificity. Question: What are two examples of primitive jawless vertebrates?
the lamprey and hagfish

Passage: With 4:51 left in regulation, Carolina got the ball on their own 24-yard line with a chance to mount a game-winning drive, and soon faced 3rd-and-9. On the next play, Miller stripped the ball away from Newton, and after several players dove for it, it took a long bounce backwards and was recovered by Ward, who returned it five yards to the Panthers 4-yard line. Although several players dove into the pile to attempt to recover it, Newton did not and his lack of aggression later earned him heavy criticism. Meanwhile, Denver's offense was kept out of the end zone for three plays, but a holding penalty on cornerback Josh Norman gave the Broncos a new set of downs. Then Anderson scored on a 2-yard touchdown run and Manning completed a pass to Bennie Fowler for a 2-point conversion, giving Denver a 24–10 lead with 3:08 left and essentially putting the game away. Carolina had two more drives, but failed to get a first down on each one. Question: What is the last name of the player who scored a 2-yard touchdown in the fourth quarter?
Anderson

Passage: Some theories developed in the 1970s established possible avenues through which inequality may have a positive effect on economic development. According to a 1955 review, savings by the wealthy, if these increase with inequality, were thought to offset reduced consumer demand. A 2013 report on Nigeria suggests that growth has risen with increased income inequality. Some theories popular from the 1950s to 2011 incorrectly stated that inequality had a positive effect on economic development. Analyses based on comparing yearly equality figures to yearly growth rates were misleading because it takes several years for effects to manifest as changes to economic growth. IMF economists found a strong association between lower levels of inequality in developing countries and sustained periods of economic growth. Developing countries with high inequality have 'succeeded in initiating growth at high rates for a few years' but 'longer growth spells are robustly associated with more equality in the income distribution.' Question: How long does it take for the effects to manifest as changes to economic growth?
several years