Does the sentence "Perkin's discovery was prompted by his work with von Hofmann on the substance aniline, derived from coal tar, and it was this breakthrough which sparked the synthetic dye industry, a boom which some historians have labelled the second chemical revolution." provide a valid answer to the question "What did the scientist who discovered the dye do after discovering it?" OPTIONS:
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- no

A: no

Does the sentence "Unlike other data cables (e.g., Ethernet, HDMI), each end of a USB cable uses a different kind of connector; a Type-A or a Type-B. This kind of design was chosen to prevent electrical overloads and damaged equipment, as only the Type-A socket provides power." provide a valid answer to the question "Why were the designs for different USB connectors made?" OPTIONS:
- yes
- no

A: yes

Does the sentence "In a separate review, G. B. Mathews wrote, "It possesses a unity of design which is really remarkable, considering the variety of its themes."" provide a valid answer to the question "How did Alexander Macfarlane summarize the relationship between different methods in "A Treatise on Algebra" in his review?" OPTIONS:
- yes
- no

A: no

Does the sentence "It is the largest hospital system in Europe." provide a valid answer to the question "How many people are employed at AP-HP?" OPTIONS:
- yes
- no

A:
no