警官は女の子達にこの車は自分達のものであるかを聞いた。

policeman

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

at (place, time); in; on; during; to (direction, state); toward; into; for (purpose); because of (reason); for; with; by; from; as (i.e. in the role of); per; in; for; a (e.g. "once a month"); and; in addition to; if; although

this (something or someone close to the speaker (including the speaker), or ideas expressed by the speaker)

car; automobile; vehicle; wheel

indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question

thing; object; article; stuff; substance; one's things; possessions; property; belongings; things; something; anything; everything; nothing; quality; reason; the way of things; used to emphasize emotion, judgment, etc.; used to indicate a common occurrence in the past (after a verb in past tense); used to indicate a general tendency; used to indicate something that should happen; item classified as ...; item related to ...; work of ...; cause of ...; cause for ...; somehow; somewhat; for some reason; really; truly

be; is; indicates past or completed action; indicates light imperative

a certain ...; some ...

indicates a question (sometimes rhetorical); or; whether or not; some- (e.g. something, someone); indicates doubt, uncertainty, etc.; emphatic prefix; suffix forming adjectives or adverbs; in that way

indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.

to hear; to listen (e.g. to music); to ask; to enquire; to query; to learn of; to hear about; to follow (advice); to comply with; to smell (esp. incense); to sample fragrance