Choose common knowledge or needs documentation on the line before each example. russia became a communist country in 1917. in to kill a mockingbird the author intends the children’s snowman to be a symbol. pablo picasso painted abstracts. u. s. presidential elections take place every four years. “ask not what your country can do for you; ask what you can do for your country.” an analysis of the use of color in a da vinci painting

the difference between facts and opinions, or objectivity and subjectivity, is not always easy to establish. also, our definitions can sometimes vary depending on our level of general knowledge and/or lack of information. however, for the most part, there are some statements that are not generally considered controversial. the fact that russia was communist, picasso's paintings abstract or the electoral system in the us operates in a certain way, are not up for debate. however, the other cases' validity depends on the way they support their argument. therefore, we would need additional information to decide whether to accept them or not.

russia became a communist country in 1917. common knowledge.

in to kill a mockingbird, the author intends the children’s snowman to be a symbol. needs documentation.

pablo picasso painted abstracts. common knowledge.

u.s. presidential elections take place every four years. common knowledge.

“ask not what your country can do for you; ask what you can do for your country.” needs documentation.

an analysis of the use of color in a da vinci painting. needs documentation.

new york state wildlife expert richard thomas found that a woodchuck could   chuck around 35 feet of dirt in the course of digging a burrow. thomas reasoned that if a woodchuck could chuck wood, he would chuck an amount equivalent to the weight of the dirt, or 700 pounds.