Problem: Does "After grinding the ore, froth flotation, which selectively separates minerals from gangue by taking advantage of differences in their hydrophobicity, is used to get an ore concentrate." answer the question "What percentage of the ore concentrate is zinc?" OPTIONS:
- yes
- no

A: no

Problem: Does "San Diego has been designated as an iHub Innovation Center for collaboration potentially between wireless and life sciences." answer the question "What sector does ESET fall under?" OPTIONS:
- yes
- no

A: no

Problem: Does "Central Catalan is considered the standard pronunciation of the language and has the highest number of speakers." answer the question "What part of the province of Tarragona is Central Catalan spoken?" OPTIONS:
- yes
- no

A:
no