In this task, you are given a question and a context passage. You have to answer the question based on the given passage.

What vehicle could you have that you would need lower pressure boiler feed water?, Context: The Rankine cycle and most practical steam engines have a water pump to recycle or top up the boiler water, so that they may be run continuously. Utility and industrial boilers commonly use multi-stage centrifugal pumps; however, other types are used. Another means of supplying lower-pressure boiler feed water is an injector, which uses a steam jet usually supplied from the boiler. Injectors became popular in the 1850s but are no longer widely used, except in applications such as steam locomotives.
steam locomotives

Which city did the Sea Wolves play for before Hartford?, Context: While some teams have enjoyed considerable on-field and even financial success, many teams in the history of the league have enjoyed little success either on or off of the field of play. There are a number of franchises which existed in the form of a number of largely-unrelated teams under numerous management groups until they folded (an example is the New York CityHawks whose owners transferred the team from New York to Hartford to become the New England Sea Wolves after two seasons, then after another two seasons were sold and became the Toronto Phantoms, who lasted another two seasons until folding). There are a number of reasons why these teams failed, including financially weak ownership groups, lack of deep financial support from some owners otherwise capable of providing it, lack of media exposure, and the host city's evident lack of interest in its team or the sport as a whole.
New York

What makes unit testing strategic?, Context: Unit testing is a software development process that involves synchronized application of a broad spectrum of defect prevention and detection strategies in order to reduce software development risks, time, and costs. It is performed by the software developer or engineer during the construction phase of the software development lifecycle. Rather than replace traditional QA focuses, it augments it. Unit testing aims to eliminate construction errors before code is promoted to QA; this strategy is intended to increase the quality of the resulting software as well as the efficiency of the overall development and QA process.

increase the quality of the resulting software as well as the efficiency of the overall development and QA process