Problem: Text: Calcium carbide is a chemical compound with the chemical formula of CaC. Its main use industrially is in the production of acetylene and calcium cyanamide.

Question: calcium carbide cac2 is the raw material for the production of acetylene?

OPTIONS:
- no
- yes
A: yes

Problem: Text: For example, high blood pressure or hypertension is considered to be not only a chronic condition itself but also correlated to diseases such as heart attack or stroke. Additionally, some socioeconomic factors may be considered as a chronic condition as they lead to disability in daily life. An important one that public health officials in the social science setting have begun highlighting is chronic poverty.

Question: is high blood pressure considered a chronic illness?

OPTIONS:
- no
- yes
A: yes

Problem: Text: On December 12, 2013, Hilton again became a public company, raising an estimated $2.35 billion in its second IPO. At the time, The Blackstone Group held a 45.8 percent stake in the company. In October 2016, HNA Group agreed to acquire a 25 percent equity interest in Hilton from Blackstone. The transaction was expected to close in the first quarter of 2017. Hilton's largest stockholders are HNA Group, Blackstone, and Wellington Management Group, which own 25%, 15.2%, and 6.7% of Hilton common stock respectively.

Question: are the hilton hotels owned by the hiltons?

OPTIONS:
- no
- yes
A:
no