Does the sentence "For any modulus, n, the set of integers from 0 to n 1 forms a group under modular addition: the inverse of any element a is n a, and 0 is the identity element." provide a valid answer to the question "What type of device can be use to demonstrate modular addition?"

A: no

Does the sentence "She received praise from ethnic Chinese worldwide as "Angel in Wheelchair"." provide a valid answer to the question "What was Jin Jing called by ethnic Chinese?"

A: yes

Does the sentence "New features included a slimmer form factor, decreased power consumption, and a quieter cooling system." provide a valid answer to the question "What would customers notice about the sound of the new, improved cooling system?"

A: yes

Does the sentence "Luis Cabral, brother of Amilcar and co-founder of PAIGC, was appointed the first President of Guinea-Bissau." provide a valid answer to the question "Who was the first President of Guinea-Bissau?"

A:
yes