Question: On January 7, 2012, Beyoncé gave birth to her first child, a daughter, Blue Ivy Carter, at Lenox Hill Hospital in New York. Five months later, she performed for four nights at Revel Atlantic City's Ovation Hall to celebrate the resort's opening, her first performances since giving birth to Blue Ivy.
Try to answer this question if possible: When did Beyonce have her first child?
Answer: January 7, 2012
Question: Other types of lossy compressors, such as the linear predictive coding (LPC) used with speech, are source-based coders. These coders use a model of the sound's generator (such as the human vocal tract with LPC) to whiten the audio signal (i.e., flatten its spectrum) before quantization. LPC may be thought of as a basic perceptual coding technique: reconstruction of an audio signal using a linear predictor shapes the coder's quantization noise into the spectrum of the target signal, partially masking it.
Try to answer this question if possible: What uses a model of the sound's generator? 
Answer: source-based coders
Question: One such reaction to the cold aesthetic of modernism and Brutalism is the school of metaphoric architecture, which includes such things as biomorphism and zoomorphic architecture, both using nature as the primary source of inspiration and design. While it is considered by some to be merely an aspect of postmodernism, others consider it to be a school in its own right and a later development of expressionist architecture.
Try to answer this question if possible: What type of architecture does nobody consider metaphoric architecture to be a development of?
Answer: unanswerable
Question: Established in 1988, Chengdu Hi-tech Industrial Development Zone (Chinese: 成都高新技术产业开发区; pinyin: Chéngdū Gāoxīn Jìshù Chǎnyè Kāifā Qū) was approved as one of the first national hi-tech development zones in 1991. In 2000, it was open to APEC and has been recognized as a national advanced hi-tech development zone in successive assessment activities held by China's Ministry of Science and Technology. It ranks 5th among the 53 national hi-tech development zones in China in terms of comprehensive strength.
Try to answer this question if possible: what was approved as a hi-tech development zone in 1988?
Answer:
unanswerable