Is is an irregular neuter verb, from be, was, being, been; found in the indicative mood, present tense, third person, and singular number. 1.  A verb is a word that signifies to be, to act, or to be acted upon. 2.  An irregular verb is a verb that does not form the preterit and the perfect participle by assuming d or ed. 3.  A neuter verb is a verb that expresses neither action nor passion, but simply being, or a state of being. 4.  The indicative mood is that form of the verb, which simply indicates or declares a thing, or asks a question. 5.  The present tense is that which expresses what now exists, or is taking place. 6.  The third person is that which denotes the person or thing merely spoken of. 7.  The singular number is that which denotes but one.

Not is an adverb. 1.  An adverb is a word added to a verb, a participle, an adjective, or an other adverb; and generally expresses time, place, degree, or manner.

Our is a personal pronoun, of the first person, plural number, masculine gender, and possessive case. 1.  A pronoun is a word used in stead of a noun. 2.  A personal pronoun is a pronoun that shows, by its form, of what person it is. 3.  The first person is that which denotes the speaker or writer. 4.  The plural number is that which denotes more than one. 5.  The masculine gender is that which denotes persons or animals of the male kind. 6.  The possessive case is that form or state of a noun or pronoun, which usually denotes the relation of property.

Own is a pronominal adjective, not compared. 1.  An adjective is a word added to a noun or pronoun, and generally expresses quality. 2.  A pronominal adjective is a definitive word which may either accompany its noun, or represent it understood. 3.  Those adjectives whose signification does not admit of different degrees cannot be compared.

Which is a relative pronoun, of the third person, singular number, neuter gender, and nominative case. 1.  A pronoun is a word used in stead of a noun. 2.  A relative pronoun is a pronoun that represents an antecedent word or phrase, and connects different clauses of a sentence. 3.  The third person is that which denotes the person or thing merely spoken of. 4.  The singular number is that which denotes but one. 5.  The neuter gender is that which denotes things that are neither male nor female. 6.  The nominative case is that form or state of a noun or pronoun which usually denotes the subject of a finite verb.

Is imposed is a regular passive verb, from the active verb, impose, imposed, imposing, imposed,—­passive, to be imposed; found in the indicative mood, present tense, third person, and singular number. 1.  A verb is a word that signifies to be, to act, or to be acted upon. 2.  A regular verb is a verb that forms the preterit and the perfect participle by assuming d or ed. 3.  A passive