Detailed Instructions: Given a prompt and two completions from a language model, select the completion that is more topical with respect to continuing the prompt. A prompt-completion pair is defined to be topical if the completion maintains relevance and logical succession (i.e. stays on topic) with the prompt. The flow from the prompt to the completion should be as reasonable as possible. Generate either Completion A or Completion B.
Q: Prompt: "Spire installed on New York's One World Trade Center brings it 
Completion A: up every day. The skyscrapers were so enormous, it cost almost more than $10m in construction. Yet it's only 10 years since 
Completion B: in line with many of the other towers that have been erected in the world, such as the iconic Great Pyramid in Egypt, which was designed by Italia
A:
Completion B