id	keyword
gc-1222	m ic
gc-1222	ra m
gc-1222	ce ra
gc-1222	ic s
gc-1222	age
gc-1222	samples
gc-1222	m s
gc-1222	materials
gc-1222	clay
gc-1222	s kb
gc-1222	+ +
gc-1222	r +
gc-1222	bronze
gc-1222	clayey
gc-1222	ceramics