Does the sentence "Early reports of Europeans reaching this area include those of the Venetian Alvise Cadamosto's voyage of 1455, the 14791480 voyage by Flemish-French trader Eustache de la Fosse, and Diogo Cao." provide a valid answer to the question "What was the name of the Portuguese explorer?"

A: yes

Does the sentence "When they are measured independently, the degree of heterosexual and homosexual can be independently determined, rather than the balance between heterosexual and homosexual as determined using the Kinsey Scale." provide a valid answer to the question "What is another benefit of measuring sexuality on two scaless verses just the Kinsey scale?"

A: yes

Does the sentence "As part of the housing and credit booms, the number of financial agreements called mortgage-backed securities (MBS) and collateralized debt obligations (CDO), which derived their value from mortgage payments and housing prices, greatly increased." provide a valid answer to the question "MBS and CDO derive their value from?"

A: yes

Does the sentence "Then CDS, Walter Natynczyk, said later that year that while recruiting has become more successful, the CF was facing a problem with its rate of loss of existing members, which increased between 2006 and 2008 from 6% to 9.2% annually." provide a valid answer to the question "What major problem is the CAF trying to address currently?"

A:
yes