claim: Caesar is a play.
evidence: The open front unrounded vowel , or low front unrounded vowel , is a type of vowel sound , used in some spoken languages .. vowel. vowel. spoken. Speech. It is one of the eight primary cardinal vowels , not directly intended to correspond to a vowel sound of a specific language but rather to serve as a fundamental reference point in a phonetic measuring system .. vowel. vowel. language. language. cardinal vowels. cardinal vowels. phonetic. Phonetics. The symbol in the International Phonetic Alphabet -LRB- IPA -RRB- that represents this sound is , and in the IPA vowel chart it is positioned at the lower-left corner .. vowel. vowel. International Phonetic Alphabet. International Phonetic Alphabet. vowel chart. vowel chart. However , the accuracy of the quadrilateral vowel chart is disputed , and the sound has been analyzed acoustically as an extra-open / low unrounded central vowel at a position where the front / back distinction has lost its significance .. vowel. vowel. vowel chart. vowel chart. acoustically. Acoustics. central. Open central unrounded vowel. back. Open back unrounded vowel. There are also differing interpretations of the exact quality of the vowel  : the classic sound recording of -LSB- -LSB- a -RSB- -RSB- by Daniel Jones is slightly more front but not quite as open as that by John Wells .. vowel. vowel. quality. Vowel quality. Daniel Jones. Daniel Jones ( phonetician ). John Wells. John C. Wells. In practice , it is considered normal by many phoneticians to use the symbol for an open central unrounded vowel and instead approximate the open front unrounded vowel with -LRB- which officially signifies a near-open front unrounded vowel -RRB- .. vowel. vowel. central. Open central unrounded vowel. This is the usual practice , for example , in the historical study of the English language .. language. language. English language. English language. The loss of separate symbols for open and near-open front vowels is usually considered unproblematic , because the perceptual difference between the two is quite small , and very few languages contrast the two .. If one needs to specify that the vowel is front , they can use symbols like -LRB- advanced -LSB- -LSB- a -RSB- -RSB- -RRB- , or -LRB- lowered -LSB- -LSB- æ -RSB- -RSB- -RRB- , with the latter being more common .. vowel. vowel. advanced. Advanced ( phonetics ). The Hamont dialect of Limburgish has been reported to contrast long open front , central and back unrounded vowels , which is extremely unusual .. Hamont dialect. Hamont dialect. Limburgish. Limburgish language. central. Open central unrounded vowel. back. Open back unrounded vowel