Analyzer
Sentence analysis
7Spans
Sentence
Span Details
この
this; last (couple of years, etc.); these; past; you (as in "you liar")-> 此のpre-noun adjective
関数
function (mathematics); function (programming)noun
は
topic markergrammar
空アドレス
null addressnoun
を
object markergrammar
返す
return; give back; put back; turn over; flip; overturn; pay back; repay; retaliate; reply; answer back; retort; do back; return an action; do again; redo; repeatgodan verb, auxiliary
ことがある。
have done (something); something has occurred; sometimes; there are times when-> 事があるexpression, verb