Problem: Phenazine is an organic compound with the formula (CH)N. It is a dibenzo annulated pyrazine, and the parent substance of many dyestuffs, such as the toluylene red, indulines, and safranines (and the closely related eurhodines). Phenazine crystallizes in yellow needles, which are only sparingly soluble in alcohol. Sulfuric acid dissolves it, forming a deep-red solution.

Based on the paragraph above can we conclude that "Phenazine was first discovered in the 1800s."?

A: It's impossible to say

Problem: The Joint Aviation Authorities (JAA) was an associated body of the ECAC representing the civil aviation regulatory authorities of a number of European States who had agreed to co-operate in developing and implementing common safety regulatory standards and procedures. It was not a regulatory body, regulation being achieved through the member authorities.

Based on the paragraph above can we conclude that "JAA does not serve a regulatory function."?

A: Yes

Problem: Sammy Gutierrez (born 31 December 1985), is a Mexican professional boxer in the Strawweight division. Guty was born in San Martin Texmelucan de Labastida, Puebla, Mexico. On October 23, 2010, he became the interim WBA Minimumweight champion by beating Colombian Luis Carrillo by 3rd round TKO.

Based on the paragraph above can we conclude that "Sammy Gutierrez only boxed in the Strawweight division. "?

A:
It's impossible to say