I know that the answer to the question "Harmonics are made of?" is in "A sound generated on any instrument produces many modes of vibration that occur simultaneously. A listener hears numerous frequencies at once. The vibration with the lowest frequency is called the fundamental frequency; the other frequencies are overtones. Harmonics are an important class of overtones with frequencies that are integer multiples of the fundamental. Whether or not the higher frequencies are integer multiples, they are collectively called the partials, referring to the different parts that make up the total spectrum.". Can you tell me what it is?
Ans: frequencies

I know that the answer to the question "Which were there fewer of, protesters or people from the contaminated zones?" is in "On September 30, 1989, thousands of Belorussians, denouncing local leaders, marched through Minsk to demand additional cleanup of the 1986 Chernobyl disaster site in Ukraine. Up to 15,000 protesters wearing armbands bearing radioactivity symbols and carrying the banned red-and-white Belorussian national flag filed through torrential rain in defiance of a ban by local authorities. Later, they gathered in the city center near the government's headquarters, where speakers demanded resignation of Yefrem Sokolov, the republic's Communist Party leader, and called for the evacuation of half a million people from the contaminated zones.". Can you tell me what it is?
Ans: protesters

I know that the answer to the question "what group is mentioned first?" is in "The linguistic heritage of the British Isles is rich, with twelve languages from six groups across four branches of the Indo-European family. The Insular Celtic languages of the Goidelic sub-group (Irish, Manx and Scottish Gaelic) and the Brittonic sub-group (Cornish, Welsh and Breton, spoken in north-western France) are the only remaining Celtic languagesthe last of their continental relations becoming extinct before the 7th century. The Norman languages of Guernesiais, Jerriais and Sarkese spoken in the Channel Islands are similar to French. A cant, called Shelta, is spoken by Irish Travellers, often as a means to conceal meaning from those outside the group. However, English, sometimes in the form of Scots, is the dominant language, with few monoglots remaining in the other languages of the region. The Norn language of Orkney and Shetland became extinct around 1880.". Can you tell me what it is?
Ans: the Indo-European family

I know that the answer to the question "A mitre was used for?" is in "When not celebrating Mass but still serving a liturgical function, such as the semiannual Urbi et Orbi papal blessing, some Papal Masses and some events at Ecumenical Councils, cardinal deacons can be recognized by the dalmatics they would don with the simple white mitre (so called mitra simplex).". Can you tell me what it is?
Ans: cardinal deacons can be recognized by the dalmatics they would don