Input: Mesozoic
The era began in the wake of the PermianTriassic extinction event, the largest well-documented mass extinction in Earth's history, and ended with the CretaceousPaleogene extinction event, another mass extinction which is known for having killed off non-avian dinosaurs, as well as other plant and animal species. The Mesozoic was a time of significant tectonic, climate and evolutionary activity. The era witnessed the gradual rifting of the supercontinent Pangaea into separate landmasses that would eventually move into their current positions. The climate of the Mesozoic was varied, alternating between warming and cooling periods. Overall, however, the Earth was hotter than it is today. Non-avian dinosaurs appeared in the Late Triassic and became the dominant terrestrial vertebrates early in the Jurassic, occupying this position for about 135 million years until their demise at the end of the Cretaceous. Birds first appeared in the Jurassic, having evolved from a branch of theropod dinosaurs. The first mammals also appeared during the Mesozoic, but would remain smallless than 15 kg (33 lb)until the Cenozoic.

When mamals appeared they remained small until what period?
Output: Cenozoic

Input: Roman Republic
Shortly before 312 BCE, the Plebeian Council enacted the Plebiscitum Ovinium. During the early republic, only consuls could appoint new senators. This initiative, however, transferred this power to the censors. It also required the censor to appoint any newly elected magistrate to the senate. By this point, plebeians were already holding a significant number of magisterial offices. Thus, the number of plebeian senators probably increased quickly. However, it remained difficult for a plebeian to enter the senate if he was not from a well-known political family, as a new patrician-like plebeian aristocracy emerged. The old nobility existed through the force of law, because only patricians were allowed to stand for high office. The new nobility existed due to the organization of society. As such, only a revolution could overthrow this new structure.

What initiative provided censors with the abillity to appoint new senators?
Output: Plebiscitum Ovinium

Input: Alps
Celtic tribes settled in Switzerland between 1000 to 1500 BC. The Raetians lived in the eastern regions, while the west was occupied by the Helvetii and the Allobrogi settled in the Rhone valley and in Savoy. Among the many substances Celtic tribes mined was salt in areas such as Salzburg in Austria where evidence of the Hallstatt culture was found by a mine manager in the 19th century. By the 6th century BC the La Tene culture was well established in the region, and became known for high quality decorated weapons and jewelry. The Celts were the most widespread of the mountain tribesthey had warriors that were strong, tall and fair skinned skilled with iron weapons, which gave them an advantage in warfare.

The Helvetii occupied which region?
Output: the west

Input: Philadelphia
Philadelphia's central city was created in the 17th century following the plan by William Penn's surveyor Thomas Holme. Center City is structured with long straight streets running east-west and north-south forming a grid pattern. The original city plan was designed to allow for easy travel and to keep residences separated by open space that would help prevent the spread of fire. The Delaware River and Schuylkill Rivers served as early boundaries between which the city's early street plan was kept within. In addition, Penn planned the creation of five public parks in the city which were renamed in 1824 (in parenthesis): Centre Square, North East Publick Square (Franklin Square), Northwest Square (Logan Square), Southwest Square (Rittenhouse Square), and Southeast Square (Washington Square). Center City has grown into the second-most populated downtown area in the United States, after Midtown Manhattan in New York City, with an estimated 183,240 residents in 2015.

How many public parks did Penn plan?
Output:
five