请严格按照以下的格式回答以下问题: 
{
  "key_objects": ["城市", "焦点", "影响"],
  "answer_format": "The focus of a city project (key_objects[1]) often leads to significant changes in the city's infrastructure (key_objects[0]), which in turn can profoundly affect the daily lives of its residents (key_objects[2]). For example, the construction of a new subway system could dramatically improve the city's transportation network, making commutes faster and more efficient."
}
user
{
  "key_objects": ["城市", "焦点", "影响"],
  "answer_format": "The focus of a city project (key_objects[1]) often leads to significant changes in the city's infrastructure (key_objects[0]), which in turn can profoundly affect the daily lives of its residents (key_objects[2]). For example, the construction of a new subway system could dramatically improve the city's transportation network, making commutes faster and more efficient."
}
assistant