TopGo- How to get "parents" on 2nd/3rd level hierarchy from enriched Go terms

Question

[biosjm]

Hi all, I have done GO enrichment analysis with topGo, and obtained for example for Biological processes 70 enriched go terms. It would be nice to plot them, but due to clearness it would be better to summarize them to 2nd/3rd level. Do you have an idea how to achieve this in R/with topgo, without looking up every single term?

Thanks!