# data[].attributes.body
self-clean
detect how many can use

# data[].attributes.body
self-ventilation
speaker system

# data[].attributes.body
detect bus arrival
detect usage
indoor separating space

# data[].attributes.headline
lecture while wearing a mask - cannot breath

# data[].attributes.subject
lecture while wearing a mask - cannot breath

# data[].attributes.headline
COVID-19 - Public facilities/transport transports/ handle might be transmitting virus

# data[].attributes.subject
COVID-19 - Public facilities/transport transports/ handle might be transmitting virus