Given the task definition and input, reply with output. This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.

The city uses the strong-mayor version of the mayor-council form of government, which is headed by one mayor, in whom executive authority is vested. Elected at-large, the mayor is limited to two consecutive four-year terms under the city's home rule charter, but can run for the position again after an intervening term. The Mayor is Jim Kenney, who replaced Michael Nutter, who served two terms from 2009 to January 2016. Kenney, as all Philadelphia mayors have been since 1952, is a member of the Democratic Party, which tends to dominate local politics so thoroughly that the Democratic Mayoral primary is often more widely covered than the general election. The legislative branch, the Philadelphia City Council, consists of ten council members representing individual districts and seven members elected at large. Democrats currently hold 14 seats, with Republicans representing two allotted at-large seats for the minority party, as well as the Northeast-based Tenth District. The current council president is Darrell Clarke.
What type of government does Philadelphia have?