Does the sentence "According to the 1921 census, 54.78% of the city's population was considered Mestizo (Indigenous mixed with European), 22.79% considered European, and 18.74% considered Indigenous." provide a valid answer to the question "in 1921, what percent of Mexico City's population Mestizo?"

A: yes

Does the sentence "The genocide was carried out during and after World War I and implemented in two phases: the wholesale killing of the able-bodied male population through massacre and subjection of army conscripts to forced labour, followed by the deportation of women, children, the elderly and infirm on death marches leading to the Syrian desert." provide a valid answer to the question "When did the Russian Caucasus Army advance into eastern Anatolia?"

A: no

Does the sentence "To protect crops from wind and drought, the Grain Intendant Zhao Guo () created the alternating fields system (daitianfa ) during Emperor Wu's reign." provide a valid answer to the question "What helped insure the safety of crops from wind?"

A: yes

Does the sentence "The electric guitar is often emphasised, used with distortion and other effects, both as a rhythm instrument using repetitive riffs with a varying degree of complexity, and as a solo lead instrument." provide a valid answer to the question "Rhythm guitar in hard rock usually plays what?"

A:
yes