Resistance is the opposite of Current. Current is related to Measure. Measure is related to Take. 
Spark is related to Light. Gas can be used for Light. Gas is related to Energy. Energy is a synonym of Iron. 
Resistance <--Antonym--> Current <--RelatedTo--> Measure <--RelatedTo--> Take 
Spark <--RelatedTo--> Light <--UsedFor-- Gas <--RelatedTo--> Energy <--Synonym--> Iron 