Vocabulary consisting only from characters you are able to read
分の
bunno
denominator bun no numerator (in writing common fractions), X Yth's (Y bun no X)jlpt3, math
空前
kuuzen
unprecedented, record-breakingmix
山上
sandžou
mountain topmix
先
saki
the future, forward, priority, precedence, former, previous, old, latejlpt5, toki
耳にする
miminisuru
to hear, to hear by chance, to hear by accident, to catch (the sound)suru
学会
gakkai
scientific society/academic meeting/academic conference/(P)gakkou