Google Search generally ignores punctuation and letter case even when using the "quotation" operator to denote exact searches. Thus, Google may not be able to differentiate terms for which punctuation impacts meaningfor example, "man eating chicken" and "man-eating chicken" (the former meaning a human who is consuming chicken meat and the latter a chicken that eats humans). Because Google treats upper and lower case letters as one and the same, it also is unable to differentiate between the pronoun "he" and the surname "He", which, when combined with its disregard for punctuation, could bury results for an obscure person named "Thomas He" among results such as: